Docker development environment

.gitignore

@@ -16,3 +16,4 @@ examples/*.srl
 .vscode
 .gitpod.yml
 cmd/machine-controller/__debug_bin
+.env

Dockerfile

@@ -28,3 +28,22 @@ COPY --from=builder \
     /go/src/github.com/kubermatic/machine-controller/webhook \
     /usr/local/bin/
 USER nobody
+
+FROM docker.io/golang:${GO_VERSION} AS dev
+
+COPY entrypoint.sh /entrypoint.sh
+RUN chmod +x /entrypoint.sh
+
+WORKDIR /src
+
+COPY go.mod ./
+COPY go.sum ./
+RUN go mod download
+
+ENV GOCACHE=/src/.buildcache
+
+VOLUME [ "/src" ]
+
+ENTRYPOINT [ "/entrypoint.sh" ]
+
+CMD [ "/usr/local/go/bin/go", "run", "./cmd/machine-controller/main.go", "-kubeconfig=.kubeconfig", "-logtostderr", "-v=6", "-metrics-address=0.0.0.0:8080", "-health-probe-address=0.0.0.0:8085", "-node-csr-approver", "-node-container-runtime=containerd" ]

README.md

@@ -107,6 +107,28 @@ data:
 
 ## Development
 
+### Docker
+
+1. Copy the `kubeconfig.yml` file of your cluster into the working directory
+    ```
+    cp </path/to/your/kubeconfig.yml> .kubeconfig
+    ```
+
+1. Create a `.env` file
+    ```
+    touch .env
+    ```
+
+1. Add needed environment variables to the `.env` file e.g.:
+    ```
+    API_TOKEN_FOR_CLOUD_PROVIDER=super-secret-api-key
+    ```
+
+1. Start the development container with `docker-compose`
+    ```
+    docker-compose up
+    ```
+
 ### Testing
 
 #### Unittests

docker-compose.yml

@@ -0,0 +1,11 @@
+services:
+  machine-controller:
+    build:
+      context: .
+      target: dev
+    volumes:
+      - ./:/src
+    env_file:
+      - .env
+    ports:
+      - 8080:8080

entrypoint.sh

@@ -0,0 +1,16 @@
+#!/bin/bash
+
+set -e
+
+if [[ ! -f "machine-controller" ]]; then
+  echo "Building userdata"
+  make build-machine-controller
+fi
+
+if [[ ! -f ".kubeconfig" ]]; then
+  echo "Unable to find $(pwd)/.kubeconfig"
+  echo "Make sure to put your .kubeconfig file into the root directory of the project"
+  exit 1
+fi
+
+exec "$@"