Experimenting with github actions

.github/workflows/docker-publish.yml

@@ -0,0 +1,63 @@
+name: Docker
+
+on:
+  push:
+    branches: travis-multiarch-builds
+
+jobs:
+  # Build and push image to docker hub.
+  buildx:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Prepare
+        id: prepare
+        run: |
+          DOCKER_IMAGE=MarkSchmitt/paperless-ng
+          DOCKER_PLATFORMS=linux/amd64,linux/arm/v7,linux/arm64/v8
+          VERSION=edge
+          if [[ $GITHUB_REF == refs/tags/* ]]; then
+            VERSION=${GITHUB_REF#refs/tags/v}
+          fi
+          if [ "${{ github.event_name }}" = "schedule" ]; then
+            VERSION=nightly
+          fi
+          TAGS="--tag ${DOCKER_IMAGE}:${VERSION}"
+          if [[ $VERSION =~ ^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$ ]]; then
+            TAGS="$TAGS --tag ${DOCKER_IMAGE}:latest"
+          fi
+          echo ::set-output name=docker_image::${DOCKER_IMAGE}
+          echo ::set-output name=version::${VERSION}
+          echo ::set-output name=buildx_args::--platform ${DOCKER_PLATFORMS} \
+            --build-arg VERSION=${VERSION} \
+            --build-arg BUILD_DATE=$(date -u +'%Y-%m-%dT%H:%M:%SZ') \
+            --build-arg VCS_REF=${GITHUB_SHA::8} \
+            ${TAGS} --file ./Dockerfile .
+      - name: install buildx
+        id: buildx
+        uses: crazy-max/ghaction-docker-buildx@v3.1.0
+
+      - name: Docker Buildx (build)
+        run: |
+          docker buildx build --output "type=image,push=false" ${{ steps.prepare.outputs.buildx_args }}
+      - name: Docker Login
+        if: success() && github.event_name != 'pull_request'
+        env:
+          DOCKER_USERNAME: ${{ secrets.DOCKER_USERNAME }}
+          DOCKER_PASSWORD: ${{ secrets.DOCKER_PASSWORD }}
+        run: |
+          echo "${DOCKER_PASSWORD}" | docker login --username "${DOCKER_USERNAME}" --password-stdin
+      - name: Docker Buildx (push)
+        if: success() && github.event_name != 'pull_request'
+        run: |
+          docker buildx build --output "type=image,push=true" ${{ steps.prepare.outputs.buildx_args }}
+      - name: Docker Check Manifest
+        if: always() && github.event_name != 'pull_request'
+        run: |
+          docker run --rm mplatform/mquery ${{ steps.prepare.outputs.docker_image }}:${{ steps.prepare.outputs.version }}
+      - name: Clear
+        if: always() && github.event_name != 'pull_request'
+        run: |
+          rm -f ${HOME}/.docker/config.json