Merge pull request #598 from phusion/focal-1.1.0

CI: Move to GitHub actions

.github/workflows/main.yml

@@ -0,0 +1,76 @@
+name: Release
+
+on:
+    workflow_dispatch:
+    push:
+        branches:
+            - focal-1.1.0
+            - master
+
+jobs:
+    build:
+        runs-on: ubuntu-latest
+        if: "!contains(github.event.head_commit.message, '[ci-skip]')"
+        steps:
+          - name: Checkout
+            uses: actions/checkout@v2
+            
+          - name: Prepare
+            id: prep
+            run: |
+              DOCKER_IMAGE=phusion/baseimage
+              GIT_BRANCH=${GITHUB_REF##*/}
+              # Set the platforms to build for here and thus reduce duplicating it.
+              PLATFORMS=amd64,arm,arm64
+              TAGS="${DOCKER_IMAGE}:${GIT_BRANCH}, ghcr.io/${{ github.repository_owner }}/baseimage:${GIT_BRANCH}"
+              
+              # Set output parameters.
+              
+              if [ "${{github.event_name}}" == "pull_request" ]; then
+                echo ::set-output name=push::false
+              else
+                echo ::set-output name=push::true
+                echo ::set-output name=tags::${TAGS}
+                echo ::set-output name=branch::${GIT_BRANCH}
+                echo ::set-output name=docker_image::${DOCKER_IMAGE}
+              fi
+              echo ::set-output name=platforms::${PLATFORMS}
+
+
+          - name: Set up QEMU
+            uses: docker/setup-qemu-action@v1
+            with:
+              platforms: ${{ steps.prep.outputs.platforms }}
+              
+          - name: Login to GHCR (Github Container Registry)
+            uses: docker/login-action@v1
+            if: github.event_name != 'pull_request'
+            with:
+             registry: ghcr.io
+             username: ${{ github.actor }}
+             password: ${{ secrets.GITHUB_TOKEN }}
+
+          - name: Set up Docker Buildx
+            id: buildx
+            uses: docker/setup-buildx-action@v1
+            with:
+              install: true
+              version: latest
+              driver-opts: image=moby/buildkit:latest
+              
+
+          - name: Login to Docker Hub
+            if: github.event_name != 'pull_request'
+            uses: docker/login-action@v1
+            with:
+                username: ${{ secrets.DOCKER_USERNAME }}
+                password: ${{ secrets.DOCKER_PASSWORD }}
+              
+          - name: Build and Push
+            uses: docker/build-push-action@v2
+            with:
+              builder: ${{ steps.buildx.outputs.name }}
+              context: image
+              platforms: ${{ steps.prep.outputs.platforms }}
+              push: ${{ steps.prep.outputs.push }}
+              tags: ${{ steps.prep.outputs.tags }}