Add docker github action

.github/workflows/docker.yml

@@ -0,0 +1,70 @@
+name: Docker
+
+on:
+  push:
+    branches:
+      - 'master'
+  schedule:
+    - cron: '0 3 * * *'
+
+jobs:
+  generate-matrix:
+    name: Generate matrix for Docker build
+    runs-on: ubuntu-latest
+    outputs:
+      matrix: ${{ steps.set-matrix.outputs.matrix }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+        with:
+          ref: master
+      - name: Set matrix for build
+        id: set-matrix
+        run: |
+          # FIXME: https://github.com/actions/checkout/issues/290
+          git fetch --force --tags
+
+          one="{ \"file\": \"./support/docker/production/Dockerfile.bullseye\", \"ref\": \"develop\", \"tags\": \"chocobozzz/peertube-test:develop-bullseye\" }"
+          two="{ \"file\": \"./support/docker/production/Dockerfile.buster\", \"ref\": \"master\", \"tags\": \"chocobozzz/peertube-test:production-buster,chocobozzz/peertube-test:$(git describe --abbrev=0)-buster\" }"
+          three="{ \"file\": \"./support/docker/production/Dockerfile.nginx\", \"ref\": \"master\", \"tags\": \"chocobozzz/peertube-webserver-test:latest\" }"
+
+          matrix="[$one,$two,$three]"
+          echo ::set-output name=matrix::{\"include\":$(echo $matrix)}
+
+  docker:
+    runs-on: ubuntu-latest
+
+    needs: generate-matrix
+
+    strategy:
+      matrix: ${{ fromJson(needs.generate-matrix.outputs.matrix) }}
+      fail-fast: false
+
+    steps:
+      -
+        name: Set up QEMU
+        uses: docker/setup-qemu-action@v1
+      -
+        name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+      -
+        name: Login to DockerHub
+        uses: docker/login-action@v1
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+
+      -
+        name: Checkout develop
+        uses: actions/checkout@v2
+        with:
+          ref: ${{ matrix.ref }}
+      -
+        name: Docker build
+        uses: docker/build-push-action@v2
+        with:
+          context: '.'
+          platforms: linux/amd64,linux/arm64
+          push: true
+          file: ${{ matrix.file }}
+          tags: ${{ matrix.tags }}

.github/workflows/stats.yml

@@ -1,4 +1,4 @@
-name: Stats"
+name: Stats
 
 on:
   push: