feat: add Docker GitHub actions

.github/workflows/docker.yml

@@ -0,0 +1,67 @@
+name: Docker
+on:
+  push:
+    tags: ['v*']
+    branches: ['master']
+  pull_request:
+  release:
+    types: ['published']
+
+jobs:
+  docker-build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Build the Docker image
+        run: docker build . --file Dockerfile
+
+  docker-push:
+    name: "Push to Registries"
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+
+      - name: Build the container image
+        uses: docker/build-push-action@v1
+        with:
+          repository: golang-repo-template
+
+      - name: Push to GitHub Packages
+        uses: docker/build-push-action@v1
+        if: github.event_name == 'release'
+        with:
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+          registry: docker.pkg.github.com
+          repository: moul/golang-repo-template/golang-repo-template
+          tag_with_ref: true
+
+      - name: Check Docker Hub Credentials
+        id: check_dockerhub_credentials
+        if: github.event_name == 'release'
+        env:
+          DOCKER_USERNAME: ${{ secrets.DOCKER_USERNAME }}
+          DOCKER_PASSWORD: ${{ secrets.DOCKER_PASSWORD }}
+        run: |
+          if [ "${DOCKER_USERNAME}" == "" ]; then
+            echo "Missing Username"
+            echo "##[set-output name=missingsecrets;]$(echo yes)"
+          elif [ "${DOCKER_PASSWORD}" == "" ]; then
+            echo "Missing Password"
+            echo "##[set-output name=missingsecrets;]$(echo yes)"
+          else
+            echo "All secrets present"
+            echo "##[set-output name=missingsecrets;]$(echo no)"
+          fi
+
+      - name: Push to Docker Hub
+        if: |
+          github.event_name == 'release' &&
+          contains(steps.check_dockerhub_credentials.outputs.missingsecrets, 'no')
+        uses: docker/build-push-action@v1
+        with:
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_PASSWORD }}
+          repository: moul/golang-repo-template
+          tag_with_ref: true

.github/workflows/go.yml

@@ -26,13 +26,7 @@ on:
       - ".github/workflows/go.yml"
 
 jobs:
-  docker-build:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v2
-      - name: Build the Docker image
-        run: docker build . --file Dockerfile
-  goreleaser:
+  goreleaser-dryrun:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout