JD Docker with Java Spring Boot Hello World

What You Will Learn during this Step 01:

Setting up 01 Spring Boot Hello World Rest API in Local

What You Will Learn during this Step 02:

Build Docker Image Manually for 01 Hello World Rest API

Docker Commands - Creating Image Manually

docker run -dit openjdk:8-jdk-alpine
docker container exec naughty_knuth ls /tmp
docker container cp target/hello-world-rest-api.jar naughty_knuth:/tmp
docker container exec naughty_knuth ls /tmp
docker container commit naughty_knuth jitubirla/hello-world-rest-api:manual1
docker run jitubirla/hello-world-rest-api:manual1
docker container ls
docker container commit --change='CMD ["java","-jar","/tmp/hello-world-rest-api.jar"]' naughty_knuth jitubirla/hello-world-rest-api:manual2
docker run -p 8080:8080 jitubirla/hello-world-rest-api:manual2

Building an Image

Build a Jar - /target/hello-world-rest-api.jar
Setup the Prerequisites for Running the JAR - openjdk:8-jdk-alpine
Copy the jar
Run the jar
Build a Jar - /target/hello-world-rest-api.jar

Building jar: C:\D_Drive\DXC\Learning\Projects\jd-docker-crash-course\docker-crash-course-master\01-hello-world-rest-api\target\hello-world-rest-api.jar

2. Setup the Prerequisites for Running the JAR - openjdk:8-jdk-alpine



C:\Users\user>cd C:\D_Drive\DXC\Learning\Projects\jd-docker-crash-course\docker-crash-course-master\01-hello-world-rest-api

C:\D_Drive\DXC\Learning\Projects\jd-docker-crash-course\docker-crash-course-master\01-hello-world-rest-api>docker run -dit openjdk:8-jdk-alpine
Unable to find image 'openjdk:8-jdk-alpine' locally
8-jdk-alpine: Pulling from library/openjdk
e7c96db7181b: Already exists
f910a506b6cb: Already exists
c2274a1a0e27: Already exists
Digest: sha256:94792824df2df33402f201713f932b58cb9de94a0cd524164a0f2283343547b3
Status: Downloaded newer image for openjdk:8-jdk-alpine
72ebb31f74858df58410702d654a63c8e08719e551b82154e7c60624b9380f2d


PS C:\D_Drive\DXC\Learning\Projects\jd-docker-crash-course\docker-crash-course-master\01-hello-world-rest-api> docker images
REPOSITORY                 TAG             IMAGE ID       CREATED             SIZE
hello-docker               latest          5cf1242e3281   About an hour ago   171MB
docker/getting-started     latest          cb90f98fd791   3 weeks ago         28.8MB
hello-world                latest          feb5d9fea6a5   7 months ago        13.3kB
jitubirla/todo-rest-api-h2   1.0.0.RELEASE   f8049a029560   2 years ago         143MB
jitubirla/todo-rest-api-h2   latest          f8049a029560   2 years ago         143MB
openjdk                    8-jdk-alpine    a3562aa0b991   2 years ago         105MB
PS C:\D_Drive\DXC\Learning\Projects\jd-docker-crash-course\docker-crash-course-master\01-hello-world-rest-api> docker container ls
CONTAINER ID   IMAGE                  COMMAND     CREATED         STATUS         PORTS     NAMES
65f59657988a   openjdk:8-jdk-alpine   "/bin/sh"   2 minutes ago   Up 2 minutes             keen_shannon
PS C:\D_Drive\DXC\Learning\Projects\jd-docker-crash-course\docker-crash-course-master\01-hello-world-rest-api>


3. Copy the jar


PS C:\D_Drive\DXC\Learning\Projects\jd-docker-crash-course\docker-crash-course-master\01-hello-world-rest-api> docker container exec keen_shannon ls /tmp
PS C:\D_Drive\DXC\Learning\Projects\jd-docker-crash-course\docker-crash-course-master\01-hello-world-rest-api> docker container cp target/hello-world-rest-api.jar keen_shannon:/tmp
PS C:\D_Drive\DXC\Learning\Projects\jd-docker-crash-course\docker-crash-course-master\01-hello-world-rest-api> docker container exec keen_shannon ls /tmp
hello-world-rest-api.jar
PS C:\D_Drive\DXC\Learning\Projects\jd-docker-crash-course\docker-crash-course-master\01-hello-world-rest-api>


4. Run the jar

PS C:\D_Drive\DXC\Learning\Projects\jd-docker-crash-course\docker-crash-course-master\01-hello-world-rest-api> docker container commit keen_shannon jitubirla/hello-world-rest-api:manual1
sha256:8d80cb3ca34918ddb3b61bd5cc99dcc9388ea96814c95eb2113d69724bafa48b
PS C:\D_Drive\DXC\Learning\Projects\jd-docker-crash-course\docker-crash-course-master\01-hello-world-rest-api> docker images
REPOSITORY                       TAG             IMAGE ID       CREATED         SIZE
jitubirla/hello-world-rest-api   manual1         8d80cb3ca349   5 seconds ago   122MB
hello-docker                     latest          5cf1242e3281   2 hours ago     171MB
docker/getting-started           latest          cb90f98fd791   3 weeks ago     28.8MB
hello-world                      latest          feb5d9fea6a5   7 months ago    13.3kB
jitubirla/todo-rest-api-h2         1.0.0.RELEASE   f8049a029560   2 years ago     143MB
jitubirla/todo-rest-api-h2         latest          f8049a029560   2 years ago     143MB
openjdk                          8-jdk-alpine    a3562aa0b991   2 years ago     105MB
PS C:\D_Drive\DXC\Learning\Projects\jd-docker-crash-course\docker-crash-course-master\01-hello-world-rest-api>


PS C:\D_Drive\DXC\Learning\Projects\jd-docker-crash-course\docker-crash-course-master\01-hello-world-rest-api> docker run jitubirla/hello-world-rest-api:manual1
PS C:\D_Drive\DXC\Learning\Projects\jd-docker-crash-course\docker-crash-course-master\01-hello-world-rest-api> docker container ls
CONTAINER ID   IMAGE                  COMMAND     CREATED          STATUS          PORTS     NAMES
65f59657988a   openjdk:8-jdk-alpine   "/bin/sh"   12 minutes ago   Up 12 minutes             keen_shannon
PS C:\D_Drive\DXC\Learning\Projects\jd-docker-crash-course\docker-crash-course-master\01-hello-world-rest-api>

PS C:\D_Drive\DXC\Learning\Projects\jd-docker-crash-course\docker-crash-course-master\01-hello-world-rest-api> docker container commit --change='CMD ["java","-jar","/tmp/hello-world-rest-api.jar"]' keen_shannon jitubirla/hello-world-rest-api:manual2
sha256:f5cf88227da4f2f327ba3f6b06464116a3972eb66080bdf8a3cec7b21acfc133
PS C:\D_Drive\DXC\Learning\Projects\jd-docker-crash-course\docker-crash-course-master\01-hello-world-rest-api> docker images
REPOSITORY                       TAG             IMAGE ID       CREATED          SIZE
jitubirla/hello-world-rest-api   manual2         f5cf88227da4   35 seconds ago   122MB
jitubirla/hello-world-rest-api   manual1         8d80cb3ca349   6 minutes ago    122MB
hello-docker                     latest          5cf1242e3281   2 hours ago      171MB
docker/getting-started           latest          cb90f98fd791   3 weeks ago      28.8MB
hello-world                      latest          feb5d9fea6a5   7 months ago     13.3kB
jitubirla/todo-rest-api-h2         1.0.0.RELEASE   f8049a029560   2 years ago      143MB
jitubirla/todo-rest-api-h2         latest          f8049a029560   2 years ago      143MB
openjdk                          8-jdk-alpine    a3562aa0b991   2 years ago      105MB

PS C:\D_Drive\DXC\Learning\Projects\jd-docker-crash-course\docker-crash-course-master\01-hello-world-rest-api> docker run -p 8080:8080 jitubirla/hello-world-rest-api:manual2

Output

What You Will Learn during this Step 03:

Use Dockerfile to Build Docker Image

/01-hello-world-rest-api/Dockerfile

FROM openjdk:8-jdk-alpine
ADD target/hello-world-rest-api.jar hello-world-rest-api.jar
ENTRYPOINT ["sh", "-c", "java -jar /hello-world-rest-api.jar"]

Basic

FROM openjdk:8-jdk-alpine
EXPOSE 8080
ADD target/hello-world-rest-api.jar hello-world-rest-api.jar
ENTRYPOINT ["sh", "-c", "java -jar /hello-world-rest-api.jar"]

user@DESKTOP-AS2FQOH MINGW64 /c/D_Drive/DXC/Learning/Projects/jd-docker-crash-course/docker-crash-course-master/01-hello-world-rest-api (master)
$ docker build -t jitubirla/hello-world-rest-api:dockerfile1 .
#1 [internal] load build definition from Dockerfile
#1 sha256:a2052a722120d8a7d852f93147cf2eb1260e6e3a8ca08ff2309ed6224d14068b
#1 transferring dockerfile: 192B 0.0s done
#1 DONE 0.1s

#2 [internal] load .dockerignore
#2 sha256:6e4783f5eb5fa0ac581d3aacfabb0fb3582e1918c4219be8efa0fa6530035ca3
#2 transferring context: 2B done
#2 DONE 0.0s

#3 [internal] load metadata for docker.io/library/openjdk:8-jdk-alpine
#3 sha256:d758512ecc4a4d978b274098688e884e061155d4c36c119bf2fd83b966ae4841
#3 DONE 0.0s

#5 [internal] load build context
#5 sha256:d2bcd9b991aa690d992f4263ea6223c06deaf7fdd8eadd3d68b444cc8eff45a0
#5 ...

#4 [1/2] FROM docker.io/library/openjdk:8-jdk-alpine
#4 sha256:d680c6a82813d080081fbc3c024d21ddfa7ff995981cc7b4bfafe55edf80a319
#4 DONE 0.3s

#5 [internal] load build context
#5 sha256:d2bcd9b991aa690d992f4263ea6223c06deaf7fdd8eadd3d68b444cc8eff45a0
#5 transferring context: 16.81MB 0.6s done
#5 DONE 0.6s

#6 [2/2] ADD target/hello-world-rest-api.jar hello-world-rest-api.jar
#6 sha256:df7aadd5b2477e4353b0629efdd6a4b0ab9c660e18e6d8afec3de68729f36021
#6 DONE 0.1s

#7 exporting to image
#7 sha256:e8c613e07b0b7ff33893b694f7759a10d42e180f2b4dc349fb57dc6b71dcab00
#7 exporting layers 0.1s done
#7 writing image sha256:cc3fbea13df615feb1098df4f88755c22db18c63435ade75bd8508896ebc3a53 done
#7 naming to docker.io/jitubirla/hello-world-rest-api:dockerfile1 done
#7 DONE 0.1s

Use 'docker scan' to run Snyk tests against images to find vulnerabilities and learn how to fix them

user@DESKTOP-AS2FQOH MINGW64 /c/D_Drive/DXC/Learning/Projects/jd-docker-crash-course/docker-crash-course-master/01-hello-world-rest-api (master)
$ docker container ls
CONTAINER ID   IMAGE                                    COMMAND                  CREATED             STATUS             PORTS                    NAMES
8a85460595dc   jitubirla/hello-world-rest-api:manual3   "java -jar /tmp/hell…"   51 minutes ago      Up 51 minutes      0.0.0.0:8080->8080/tcp   peaceful_grothendieck
65f59657988a   openjdk:8-jdk-alpine                     "/bin/sh"                About an hour ago   Up About an hour                            keen_shannon

user@DESKTOP-AS2FQOH MINGW64 /c/D_Drive/DXC/Learning/Projects/jd-docker-crash-course/docker-crash-course-master/01-hello-world-rest-api (master)
$ docker run -p 8080:8080 jitubirla/hello-world-rest-api:dockerfile1

What You Will Learn during this Step 04:

Understanding Docker Image Layers, Caching and Dockerfile Instructions

/01-hello-world-rest-api/Dockerfile

FROM openjdk:8-jdk-alpine
EXPOSE 8080
ADD target/hello-world-rest-api.jar hello-world-rest-api.jar
ENTRYPOINT ["sh", "-c", "java -jar /hello-world-rest-api.jar"]

Quick Tip for Windows 10 : Enable "Expose Demon without TLS option"

If you are using Windows 10 and docker version : Version 2.0.0.3 (31259) or above, you would need to Enable Expose Daemon without TLS option!
Step 1: Right click on "Docker Desktop is running icon "
Step 2: Click on Settings
Step 3: In “General Tab” you must enable checkbox “Expose Daemon on tcp://localhost:2375 without TLS”
This is the error you would see in the subsequent steps if you do not enable this - java.net.ConnectException: Connection refused: connect
More details - spotify/docker-maven-plugin#351

What You Will Learn during this Step 05:

Using Dockerfile Spotify Plugin to Create Docker Images
From Spotify
https://github.com/spotify/dockerfile-maven

/01-hello-world-rest-api/pom.xml

<plugin>
	<groupId>com.spotify</groupId>
	<artifactId>dockerfile-maven-plugin</artifactId>
	<version>1.4.10</version>
	<executions>
		<execution>
			<id>default</id>
			<goals>
				<goal>build</goal>
			</goals>
		</execution>
	</executions>
	<configuration>
		<repository>in28min/${project.name}</repository>
		<tag>${project.version}</tag>
		<skipDockerInfo>true</skipDockerInfo>
	</configuration>
</plugin>

user@DESKTOP-AS2FQOH MINGW64 /c/D_Drive/DXC/Learning/Projects/jd-docker-crash-course/docker-crash-course-master/01-hello-world-rest-api (master)
$ mvn package -DskipTests
[INFO] Scanning for projects...
[INFO]
[INFO] ------< com.in28minutes.rest.webservices:01-hello-world-rest-api >------
[INFO] Building hello-world-rest-api 0.0.1-SNAPSHOT
[INFO] --------------------------------[ jar ]---------------------------------
[INFO]
[INFO] --- maven-resources-plugin:3.1.0:resources (default-resources) @ 01-hello-world-rest-api ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 1 resource
[INFO] Copying 0 resource
[INFO]
[INFO] --- maven-compiler-plugin:3.8.1:compile (default-compile) @ 01-hello-world-rest-api ---
[INFO] Nothing to compile - all classes are up to date
[INFO]
[INFO] --- maven-resources-plugin:3.1.0:testResources (default-testResources) @ 01-hello-world-rest-api ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] skip non existing resourceDirectory C:\D_Drive\DXC\Learning\Projects\jd-docker-crash-course\docker-crash-course-master\01-hello-world-rest-api\src\test\resources
[INFO]
[INFO] --- maven-compiler-plugin:3.8.1:testCompile (default-testCompile) @ 01-hello-world-rest-api ---
[INFO] Nothing to compile - all classes are up to date
[INFO]
[INFO] --- maven-surefire-plugin:2.22.2:test (default-test) @ 01-hello-world-rest-api ---
[INFO] Tests are skipped.
[INFO]
[INFO] --- maven-jar-plugin:3.1.1:jar (default-jar) @ 01-hello-world-rest-api ---
[INFO] Building jar: C:\D_Drive\DXC\Learning\Projects\jd-docker-crash-course\docker-crash-course-master\01-hello-world-rest-api\target\hello-world-rest-api.jar
[INFO]
[INFO] --- spring-boot-maven-plugin:2.1.7.RELEASE:repackage (repackage) @ 01-hello-world-rest-api ---
[INFO] Replacing main artifact with repackaged archive
[INFO]
[INFO] --- dockerfile-maven-plugin:1.4.10:build (default) @ 01-hello-world-rest-api ---
[INFO] dockerfile: null
[INFO] contextDirectory: C:\D_Drive\DXC\Learning\Projects\jd-docker-crash-course\docker-crash-course-master\01-hello-world-rest-api
[INFO] Building Docker context C:\D_Drive\DXC\Learning\Projects\jd-docker-crash-course\docker-crash-course-master\01-hello-world-rest-api
[INFO] Path(dockerfile): null
[INFO] Path(contextDirectory): C:\D_Drive\DXC\Learning\Projects\jd-docker-crash-course\docker-crash-course-master\01-hello-world-rest-api
[INFO]
[INFO] Image will be built as jitubirla/hello-world-rest-api:0.0.1-SNAPSHOT
[INFO]
[INFO] Step 1/4 : FROM openjdk:8-jdk-alpine
[INFO]
[INFO] Pulling from library/openjdk
[INFO] Digest: sha256:94792824df2df33402f201713f932b58cb9de94a0cd524164a0f2283343547b3
[INFO] Status: Image is up to date for openjdk:8-jdk-alpine
[INFO]  ---> a3562aa0b991
[INFO] Step 2/4 : EXPOSE 8080
[INFO]
[INFO]  ---> Running in f6f1f176b0f8
[INFO] Removing intermediate container f6f1f176b0f8
[INFO]  ---> 1c230e118418
[INFO] Step 3/4 : ADD target/hello-world-rest-api.jar hello-world-rest-api.jar
[INFO]
[INFO]  ---> de66c80e8fe1
[INFO] Step 4/4 : ENTRYPOINT ["sh", "-c", "java -jar /hello-world-rest-api.jar"]
[INFO]
[INFO]  ---> Running in 87cacfbba36b
[INFO] Removing intermediate container 87cacfbba36b
[INFO]  ---> 4aba1c6d85b1
[INFO] Successfully built 4aba1c6d85b1
[INFO] Successfully tagged jitubirla/hello-world-rest-api:0.0.1-SNAPSHOT
[INFO]
[INFO] Detected build of image with id 4aba1c6d85b1
[INFO] Successfully built jitubirla/hello-world-rest-api:0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  10.519 s
[INFO] Finished at: 2022-05-05T11:37:25+05:30
[INFO] ------------------------------------------------------------------------

user@DESKTOP-AS2FQOH MINGW64 /c/D_Drive/DXC/Learning/Projects/jd-docker-crash-course/docker-crash-course-master/01-hello-world-rest-api (master)
$

Run the container

user@DESKTOP-AS2FQOH MINGW64 /c/D_Drive/DXC/Learning/Projects/jd-docker-crash-course/docker-crash-course-master/01-hello-world-rest-api (master)
$ docker container run -p 8080:8080 jitubirla/hello-world-rest-api:0.0.1-SNAPSHOT

What You Will Learn during this Step 06:

Create a generic reusable Dockerfile

/01-hello-world-rest-api/Dockerfile

FROM openjdk:8-jdk-alpine
EXPOSE 8080
ADD target/*.jar app.jar
ENTRYPOINT ["sh", "-c", "java -jar /app.jar"]

What You Will Learn during this Step 07:

Improving Caching of Docker Images by Adding Libraries in a Separate Step

/01-hello-world-rest-api/pom.xml

	<plugin>
				<groupId>org.apache.maven.plugins</groupId>
				<artifactId>maven-dependency-plugin</artifactId>
				<executions>
					<execution>
						<id>unpack</id>
						<phase>package</phase>
						<goals>
							<goal>unpack</goal>
						</goals>
						<configuration>
							<artifactItems>
								<artifactItem>
									<groupId>${project.groupId}</groupId>
									<artifactId>${project.artifactId}</artifactId>
									<version>${project.version}</version>
								</artifactItem>
							</artifactItems>
						</configuration>
					</execution>
				</executions>
			</plugin>

		<!-- 	<plugin>
				<groupId>com.spotify</groupId>
				<artifactId>dockerfile-maven-plugin</artifactId>
				<version>1.4.10</version>
				<executions>
					<execution>
						<id>default</id>
						<goals>
							<goal>build</goal>
						</goals>
					</execution>
				</executions>
				<configuration>
					<repository>jitubirla/${project.name}</repository>
					<tag>${project.version}</tag>
					<skipDockerInfo>true</skipDockerInfo>
				</configuration>
			</plugin> -->

Level 2

FROM openjdk:8-jdk-alpine
ARG DEPENDENCY=target/dependency
COPY ${DEPENDENCY}/BOOT-INF/lib /app/lib
COPY ${DEPENDENCY}/META-INF /app/META-INF
COPY ${DEPENDENCY}/BOOT-INF/classes /app
ENTRYPOINT ["java","-cp","app:app/lib/*","com.in28minutes.rest.webservices.restfulwebservices.RestfulWebServicesApplication"]

user@DESKTOP-AS2FQOH MINGW64 /c/D_Drive/DXC/Learning/Projects/jd-docker-crash-course/docker-crash-course-master/01-hello-world-rest-api (master)
$ mvn clean package -DskipTests
[INFO] Scanning for projects...
[INFO]
[INFO] ------< com.in28minutes.rest.webservices:01-hello-world-rest-api >------
[INFO] Building hello-world-rest-api 0.0.1-SNAPSHOT
[INFO] --------------------------------[ jar ]---------------------------------
[INFO]
[INFO] --- maven-clean-plugin:3.1.0:clean (default-clean) @ 01-hello-world-rest-api ---
[INFO] Deleting C:\D_Drive\DXC\Learning\Projects\jd-docker-crash-course\docker-crash-course-master\01-hello-world-rest-api\target
[INFO]
[INFO] --- maven-resources-plugin:3.1.0:resources (default-resources) @ 01-hello-world-rest-api ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 1 resource
[INFO] Copying 0 resource
[INFO]
[INFO] --- maven-compiler-plugin:3.8.1:compile (default-compile) @ 01-hello-world-rest-api ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 3 source files to C:\D_Drive\DXC\Learning\Projects\jd-docker-crash-course\docker-crash-course-master\01-hello-world-rest-api\target\classes
[INFO]
[INFO] --- maven-resources-plugin:3.1.0:testResources (default-testResources) @ 01-hello-world-rest-api ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] skip non existing resourceDirectory C:\D_Drive\DXC\Learning\Projects\jd-docker-crash-course\docker-crash-course-master\01-hello-world-rest-api\src\test\resources
[INFO]
[INFO] --- maven-compiler-plugin:3.8.1:testCompile (default-testCompile) @ 01-hello-world-rest-api ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 1 source file to C:\D_Drive\DXC\Learning\Projects\jd-docker-crash-course\docker-crash-course-master\01-hello-world-rest-api\target\test-classes
[INFO]
[INFO] --- maven-surefire-plugin:2.22.2:test (default-test) @ 01-hello-world-rest-api ---
[INFO] Tests are skipped.
[INFO]
[INFO] --- maven-jar-plugin:3.1.1:jar (default-jar) @ 01-hello-world-rest-api ---
[INFO] Building jar: C:\D_Drive\DXC\Learning\Projects\jd-docker-crash-course\docker-crash-course-master\01-hello-world-rest-api\target\hello-world-rest-api.jar
[INFO]
[INFO] --- spring-boot-maven-plugin:2.1.7.RELEASE:repackage (repackage) @ 01-hello-world-rest-api ---
[INFO] Replacing main artifact with repackaged archive
[INFO]
[INFO] --- maven-dependency-plugin:3.1.1:unpack (unpack) @ 01-hello-world-rest-api ---
[INFO] Configured Artifact: com.in28minutes.rest.webservices:01-hello-world-rest-api:0.0.1-SNAPSHOT:jar
[INFO] Unpacking C:\D_Drive\DXC\Learning\Projects\jd-docker-crash-course\docker-crash-course-master\01-hello-world-rest-api\target\hello-world-rest-api.jar to C:\D_Drive\DXC\Learning\Projects\jd-docker-crash-course\docker-crash-course-master\01-hello-world-rest-api\target\dependency with includes "" and excludes ""
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  12.773 s
[INFO] Finished at: 2022-05-05T12:14:32+05:30
[INFO] ------------------------------------------------------------------------

user@DESKTOP-AS2FQOH MINGW64 /c/D_Drive/DXC/Learning/Projects/jd-docker-crash-course/docker-crash-course-master/01-hello-world-rest-api (master)
$ docker build -t jitubirla/hello-world-rest-api:dockerfile1 .
#1 [internal] load build definition from Dockerfile
#1 sha256:60e536e9be0924239509254814cdfd0fb94b13f251b6c37bbcadd9af19b7c3d4
#1 transferring dockerfile: 32B 0.0s done
#1 DONE 0.1s

#2 [internal] load .dockerignore
#2 sha256:9f7ab7badef57d674697c9b9f525552d173f63d7ec7779e37205e0c438fcd4d3
#2 transferring context: 2B done
#2 DONE 0.0s

#3 [internal] load metadata for docker.io/library/openjdk:8-jdk-alpine
#3 sha256:d758512ecc4a4d978b274098688e884e061155d4c36c119bf2fd83b966ae4841
#3 DONE 0.0s

#4 [1/4] FROM docker.io/library/openjdk:8-jdk-alpine
#4 sha256:d680c6a82813d080081fbc3c024d21ddfa7ff995981cc7b4bfafe55edf80a319
#4 DONE 0.0s

#5 [internal] load build context
#5 sha256:688c2e42100cba66ac9b299bf7fb22041b481cf455b06f7414e1e589b454d72a
#5 transferring context: 12.65kB 0.1s done
#5 DONE 0.1s

#6 [2/4] COPY target/dependency/BOOT-INF/lib /app/lib
#6 sha256:ef509c4fead1682873c8622bafccf62532ac8664faf561785552a22ad7178fc4
#6 CACHED

#7 [3/4] COPY target/dependency/META-INF /app/META-INF
#7 sha256:b5a15357cb31093f74372749565c02c9d9d4dd21606727aaded8194670e7ac31
#7 DONE 0.1s

#8 [4/4] COPY target/dependency/BOOT-INF/classes /app
#8 sha256:9a0defac4bc0c8f07ce6e5500e6d6ad8707125eaf640162748d3175eea9dbe9b
#8 DONE 0.2s

#9 exporting to image
#9 sha256:e8c613e07b0b7ff33893b694f7759a10d42e180f2b4dc349fb57dc6b71dcab00
#9 exporting layers 0.1s done
#9 writing image sha256:a9140d3fbe0b210c8ef41fc6837f90143bd1a89675aa91253f78eeef66ac3b77 done
#9 naming to docker.io/jitubirla/hello-world-rest-api:dockerfile1 done
#9 DONE 0.1s

Use 'docker scan' to run Snyk tests against images to find vulnerabilities and learn how to fix them

user@DESKTOP-AS2FQOH MINGW64 /c/D_Drive/DXC/Learning/Projects/jd-docker-crash-course/docker-crash-course-master/01-hello-world-rest-api (master)

What You Will Learn during this Step 08:

Using JIB Plugin to Create Docker Images
delete Docerfile (this file is not required in case if we are using JIB plugin)
JIB is only for Java project if we are working on any other langauge then we have to use Docerfile

JIB

https://github.com/GoogleContainerTools/jib/tree/master/jib-maven-plugin#quickstart
https://github.com/GoogleContainerTools/jib/blob/master/docs/faq.md

"useCurrentTimestamp - true" discussion

https://github.com/GooleContainerTools/jib/blob/master/docs/faq.md#why-is-my-image-created-48-years-ago
GoogleContainerTools/jib#413

<plugin>
	<groupId>com.google.cloud.tools</groupId>
	<artifactId>jib-maven-plugin</artifactId>
	<version>1.6.1</version>
	<configuration>
		<container>
			<creationTime>USE_CURRENT_TIMESTAMP</creationTime>
		</container>
	</configuration>
	<executions>
		<execution>
			<phase>package</phase>
			<goals>
				<goal>dockerBuild</goal>
			</goals>
		</execution>
	</executions>
</plugin>

<configuration>
	<from>
		<image>openjdk:alpine</image>
	</from>
	<to>
		<image>in28min/${project.name}</image>
		<tags>
			<tag>${project.version}</tag>
			<tag>latest</tag>
		</tags>
	</to>
	<container>
		<jvmFlags>
			<jvmFlag>-Xms512m</jvmFlag>
		</jvmFlags>
		<mainClass>com.in28minutes.rest.webservices.restfulwebservices.RestfulWebServicesApplication</mainClass>
		<ports>
			<port>8100</port>
		</ports>
	</container>
</configuration>

/01-hello-world-rest-api/pom.xml

<plugin>
				<groupId>com.google.cloud.tools</groupId>
				<artifactId>jib-maven-plugin</artifactId>
				<version>1.6.1</version>
				<configuration>
					<container>
						<creationTime>USE_CURRENT_TIMESTAMP</creationTime>
					</container>
				</configuration>
				<executions>
					<execution>
						<phase>package</phase>
						<goals>
							<goal>dockerBuild</goal>
						</goals>
					</execution>
				</executions>
			</plugin>
			<!-- <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-dependency-plugin</artifactId> 
				<executions> <execution> <id>unpack</id> <phase>package</phase> <goals> <goal>unpack</goal> 
				</goals> <configuration> <artifactItems> <artifactItem> <groupId>${project.groupId}</groupId> 
				<artifactId>${project.artifactId}</artifactId> <version>${project.version}</version> 
				</artifactItem> </artifactItems> </configuration> </execution> </executions> 
				</plugin> -->

			<!-- <plugin> <groupId>com.spotify</groupId> <artifactId>dockerfile-maven-plugin</artifactId> 
				<version>1.4.10</version> <executions> <execution> <id>default</id> <goals> 
				<goal>build</goal> </goals> </execution> </executions> <configuration> <repository>jitubirla/${project.name}</repository> 
				<tag>${project.version}</tag> <skipDockerInfo>true</skipDockerInfo> </configuration> 
				</plugin> -->

What You Will Learn during this Step 09:

Using Fabric8 Docker Maven Plugin to Create Docker Images

fabric8io/docker-maven-plugin

https://dmp.fabric8.io/
Remove Spotify Maven and JIB Plugins. Add the plugin shown below and configure property for jar file.

Supports

Dockerfile
Defining Dockerfile contents in POM XML.

Using Dockerfile

<!-- To build the image - "mvn clean package" -->
<!-- Successfully tagged webservices/01-hello-world-rest-api -->
<!-- docker run -p 8080:8080 webservices/01-hello-world-rest-api -->
<plugin>
	<groupId>io.fabric8</groupId>
	<artifactId>docker-maven-plugin</artifactId>
	<version>0.26.0</version>
	<executions>
		<execution>
			<id>docker-build</id>
			<phase>package</phase>
			<goals>
				<goal>build</goal>
			</goals>
		</execution>
	</executions>
</plugin>

<properties>
...
 <jar>${project.build.directory}/${project.build.finalName}.jar</jar>
</properties>

Using XML Configuration

<!-- To build the image - "mvn clean package" -->
<!-- TAG - 01-hello-world-rest-api:latest -->
<!-- docker run -p 8080:8080 01-hello-world-rest-api:latest -->
<plugin>
   <groupId>io.fabric8</groupId>
   <artifactId>docker-maven-plugin</artifactId>
   <version>0.26.0</version>
   <extensions>true</extensions>
   <configuration>
      <verbose>true</verbose>
      <images>
         <image>
            <name>${project.artifactId}</name>
            <build>
               <from>java:8-jdk-alpine</from>
               <entryPoint>
                  <exec>
                     <args>java</args>
                     <args>-jar</args>
                     <args>/maven/${project.build.finalName}.jar</args>
                  </exec>
               </entryPoint>
               <assembly>
                  <descriptorRef>artifact</descriptorRef>
               </assembly>
            </build>
         </image>
      </images>
   </configuration>
   <executions>
	<execution>
		<id>docker-build</id>
		<phase>package</phase>
		<goals>
			<goal>build</goal>
		</goals>
	</execution>
   </executions>
</plugin>

Provide feedback

Saved searches

Use saved searches to filter your results more quickly

Docker_with_Java_SB_Rest_API.md

Docker_with_Java_SB_Rest_API.md

JD Docker with Java Spring Boot Hello World

What You Will Learn during this Step 01:

What You Will Learn during this Step 02:

Docker Commands - Creating Image Manually

Building an Image

What You Will Learn during this Step 03:

Basic

What You Will Learn during this Step 04:

Quick Tip for Windows 10 : Enable "Expose Demon without TLS option"

What You Will Learn during this Step 05:

What You Will Learn during this Step 06:

What You Will Learn during this Step 07:

Level 2

What You Will Learn during this Step 08:

JIB

"useCurrentTimestamp - true" discussion

What You Will Learn during this Step 09:

fabric8io/docker-maven-plugin

Using Dockerfile

Using XML Configuration

Files

Docker_with_Java_SB_Rest_API.md

Latest commit

History

Docker_with_Java_SB_Rest_API.md

File metadata and controls

JD Docker with Java Spring Boot Hello World

What You Will Learn during this Step 01:

What You Will Learn during this Step 02:

Docker Commands - Creating Image Manually

Building an Image

What You Will Learn during this Step 03:

Basic

What You Will Learn during this Step 04:

Quick Tip for Windows 10 : Enable "Expose Demon without TLS option"

What You Will Learn during this Step 05:

What You Will Learn during this Step 06:

What You Will Learn during this Step 07:

Level 2

What You Will Learn during this Step 08:

JIB

"useCurrentTimestamp - true" discussion

What You Will Learn during this Step 09:

fabric8io/docker-maven-plugin

Using Dockerfile

Using XML Configuration