👷 Automatically build docker images

.github/workflows/docker-images.yml

@@ -0,0 +1,32 @@
+name: Docker Image CI
+
+on:
+  push:
+    tags:
+      - n8n@*
+
+jobs:
+
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v1
+    - name: Get the version
+      id: vars
+      run: echo ::set-output name=tag::$(echo ${GITHUB_REF:14})
+    - name: Log in to registry
+      uses: actions/docker/login@master
+      env:
+        DOCKER_REGISTRY_URL: registry.hub.docker.com
+        DOCKER_USERNAME: ${{ secrets.DOCKER_USERNAME }}
+        DOCKER_PASSWORD: ${{ secrets.DOCKER_PASSWORD }}
+    - name: Build the Docker image of version
+      run: docker build --build-arg N8N_VERSION=${{steps.vars.outputs.tag}} -t n8nio/n8n:${{steps.vars.outputs.tag}} docker/images/n8n
+    - name: Push Docker image of version
+      run: docker push n8nio/n8n:${{steps.vars.outputs.tag}}
+    - name: Tag Docker image with latest
+      run: docker tag n8nio/n8n:${{steps.vars.outputs.tag}} n8nio/n8n:latest
+    - name: Push docker images of latest
+      run: docker push n8nio/n8n:latest