Add Dockerfile and build/push CI

.github/workflows/docker.yaml

@@ -0,0 +1,56 @@
+name: "Docker build and push"
+on:
+  pull_request:
+  push:
+    branches:
+      - main
+      - dev
+    tags:
+      - v*
+jobs:
+  docker-build:
+    name: "Build and push Docker image"
+    runs-on: ubuntu-20.04
+    strategy:
+      matrix:
+        arch: ["amd64"]
+    steps:
+      - uses: actions/checkout@v2
+      - name: Log in to the Container registry
+        uses: docker/login-action@v1
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+      - name: Compute Docker tags, check VERSION file matches tag
+        id: compute-tag
+        run: |
+          set -ex
+          base="ghcr.io/coqui-ai/tts"
+          tags="" # PR build
+          if [[ "${{ startsWith(github.ref, 'refs/heads/') }}" = "true" ]]; then
+            # Push to branch
+            github_ref="${{ github.ref }}"
+            branch=${github_ref#*refs/heads/} # strip prefix to get branch name
+            tags="${base}:${branch},${base}:${{ github.sha }},"
+          elif [[ "${{ startsWith(github.ref, 'refs/tags/') }}" = "true" ]]; then
+            VERSION="v$(cat TTS/VERSION)"
+            if [[ "${{ github.ref }}" != "refs/tags/${VERSION}" ]]; then
+              echo "Pushed tag does not match VERSION file. Aborting push."
+              exit 1
+            fi
+            tags="${base}:${VERSION},${base}:latest,${base}:${{ github.sha }}"
+          fi
+          echo "::set-output name=tags::${tags}"
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v1
+      - name: Set up Docker Buildx
+        id: buildx
+        uses: docker/setup-buildx-action@v1
+      - name: Build and push
+        uses: docker/build-push-action@v2
+        with:
+          context: .
+          platforms: linux/${{ matrix.arch }}
+          push: ${{ github.event_name == 'push' }}
+          tags: ${{ steps.compute-tag.outputs.tags }}