Updating docker containers to use Dockerize.

Author: Anthony Hastings

docker-compose.yml

@@ -32,7 +32,7 @@ services:
   producer:
     build: ./services/producer
     container_name: kafka-nodejs-example-producer
-    command: ./wait-for-it.sh zookeeper:2181 -- ./wait-for-it.sh kafka:9092 -- ./wait-for-it.sh database:5432 -- npm start
+    command: sh -c "dockerize -wait tcp://zookeeper:2181 -wait tcp://kafka:9092 -wait tcp://database:5432 npm start"
     depends_on:
       - zookeeper
       - kafka
@@ -50,7 +50,7 @@ services:
   consumer:
     build: ./services/consumer
     container_name: kafka-nodejs-example-consumer
-    command: ./wait-for-it.sh zookeeper:2181 -- ./wait-for-it.sh kafka:9092 -- ./wait-for-it.sh database:5432 -- npm start
+    command: sh -c "dockerize -wait tcp://zookeeper:2181 -wait tcp://kafka:9092 -wait tcp://database:5432 npm start"
     depends_on:
       - zookeeper
       - kafka
@@ -61,4 +61,4 @@ services:
       PGUSER: ${POSTGRES_USER}
       PGDATABASE: ${POSTGRES_USER}
       PGPASSWORD: ${POSTGRES_PASSWORD}
-      KAFKA_ZOOKEEPER_CONNECT: zookeeper:2181
+      KAFKA_ZOOKEEPER_CONNECT: zookeeper:2181

services/consumer/Dockerfile

@@ -1,15 +1,18 @@
-FROM node:8.11.3-alpine
+FROM node:10.9-alpine
 MAINTAINER Anthony Hastings <[email protected]>
 
-# Installing bash.
-RUN apk add --no-cache bash bash-doc bash-completion
-
 # Create a directory (to house our source files) and navigate to it.
 WORKDIR /src
 
-# Copy over the bash script to test and wait on the availability of a TCP host and port.
-COPY ./wait-for-it.sh /src/
-RUN chmod +x /src/wait-for-it.sh
+# Installing dockerize which can test and wait on the availability of a TCP host and port.
+ENV DOCKERIZE_VERSION v0.6.1
+RUN apk add --no-cache openssl \
+    && wget https://github.com/jwilder/dockerize/releases/download/$DOCKERIZE_VERSION/dockerize-alpine-linux-amd64-$DOCKERIZE_VERSION.tar.gz \
+    && tar -C /usr/local/bin -xzvf dockerize-alpine-linux-amd64-$DOCKERIZE_VERSION.tar.gz \
+    && rm dockerize-alpine-linux-amd64-$DOCKERIZE_VERSION.tar.gz
+
+# Installing bash.
+RUN apk add --no-cache bash bash-doc bash-completion
 
 # Copy over the package.json and lock file to the containers working directory.
 COPY ./package.json ./package-lock.json /src/
@@ -24,4 +27,4 @@ RUN apk add --no-cache --virtual .gyp \
     && apk del .gyp
 
 # Copy everything in the host folder into the working folder of the container.
-COPY ./src /src/
+COPY ./src /src/

services/consumer/wait-for-it.sh

@@ -1,15 +1,18 @@
-FROM node:8.11.3-alpine
+FROM node:10.9-alpine
 MAINTAINER Anthony Hastings <[email protected]>
 
-# Installing bash.
-RUN apk add --no-cache bash bash-doc bash-completion
-
 # Create a directory (to house our source files) and navigate to it.
 WORKDIR /src
 
-# Copy over the bash script to test and wait on the availability of a TCP host and port.
-COPY ./wait-for-it.sh /src/
-RUN chmod +x /src/wait-for-it.sh
+# Installing dockerize which can test and wait on the availability of a TCP host and port.
+ENV DOCKERIZE_VERSION v0.6.1
+RUN apk add --no-cache openssl \
+    && wget https://github.com/jwilder/dockerize/releases/download/$DOCKERIZE_VERSION/dockerize-alpine-linux-amd64-$DOCKERIZE_VERSION.tar.gz \
+    && tar -C /usr/local/bin -xzvf dockerize-alpine-linux-amd64-$DOCKERIZE_VERSION.tar.gz \
+    && rm dockerize-alpine-linux-amd64-$DOCKERIZE_VERSION.tar.gz
+
+# Installing bash.
+RUN apk add --no-cache bash bash-doc bash-completion
 
 # Copy over the package.json and lock file to the containers working directory.
 COPY ./package.json ./package-lock.json /src/
@@ -27,4 +30,4 @@ RUN apk add --no-cache --virtual .gyp \
 COPY ./src /src/
 
 # Expose the specified port back to the host machine.
-EXPOSE 8080
+EXPOSE 8080