Add docker-build.yml

.github/workflows/docker-build.yml

@@ -0,0 +1,78 @@
+# This action enables building container images for farmer and node, can be triggered manually or by release creation.
+#
+# Container images are only pushed to GitHub Container Registry.
+name: Docker build
+
+on:
+  workflow_dispatch:
+  push:
+    branches:
+      - '**'
+    tags:
+      - '**'
+
+# Incremental compilation here isn't helpful
+env:
+  CARGO_INCREMENTAL: 0
+
+jobs:
+  container-linux:
+    runs-on: ubuntu-22.04
+    permissions:
+      contents: write
+      packages: write
+    strategy:
+      matrix:
+        image:
+          - farmer
+          - node
+        platform:
+          - arch: linux/amd64
+            profile: production
+            suffix: ubuntu-x86_64-${{ github.ref_name }}
+            image-suffix: ''
+
+    steps:
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v1
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+
+      - name: Log into registry
+        uses: docker/login-action@v1
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ github.token }}
+
+      - name: Extract Docker metadata
+        id: meta
+        uses: docker/metadata-action@v3
+        with:
+          images: |
+            # The final created images will be `ghcr.io/subspace/{node, farmer}` under subspace organization,
+            # hence adding a prefix `subspace-` for a fork repo, the final image will be:
+            #   - ghcr.io/liuchengxu/subspace-node:tag
+            #   - ghcr.io/liuchengxu/subspace-farmer:tag
+            ghcr.io/${{ github.repository_owner }}/subspace-${{ matrix.image }}
+          tags: |
+            type=ref,event=tag
+            type=ref,event=branch
+            type=sha
+          flavor: |
+            latest=false
+            suffix=${{ matrix.platform.image-suffix }}
+      - name: Build and push ${{ matrix.image }} image
+        id: build
+        uses: docker/build-push-action@v2
+        with:
+          file: Dockerfile-${{ matrix.image }}
+          platforms: ${{ matrix.platform.arch }}
+          push: ${{ github.event_name != 'pull_request' }}
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          build-args: |
+            SUBSTRATE_CLI_GIT_COMMIT_HASH=${{ github.sha }}
+            PROFILE=${{ matrix.platform.profile }}
+            RUSTFLAGS=-C strip=debuginfo