Build devcontainer (#21)

* Build devcontainer

* Update devcontainer.yml

* Update devcontainer.yml

* Update image build context

.github/workflows/devcontainer.yml

@@ -0,0 +1,151 @@
+name: Build
+
+on:
+  workflow_dispatch:
+  push:
+    branches:
+      - 'main'
+  pull_request:
+    branches:
+      - 'main'
+
+concurrency:
+  group: ci-buildtrain-${{ github.ref }}-1
+  cancel-in-progress: true
+
+permissions:
+  contents: read
+  packages: write
+
+jobs:
+  build:
+    strategy:
+      matrix:
+        arch: [ linux/arm64 , linux/amd64 ]
+        include:
+          - arch: linux/arm64
+            builder: buildjet-4vcpu-ubuntu-2204-arm
+          - arch: linux/amd64
+            builder: buildjet-4vcpu-ubuntu-2204
+    name: Build - ${{matrix.arch}}
+    runs-on: ${{matrix.builder}}
+    steps:
+      # Get the repository's code
+      - name: Checkout
+        uses: actions/checkout@v3
+      - name: set lower case repository name
+        run: |
+          echo "REPOSITORY_LC=${REPOSITORY,,}-devcontainer" >>${GITHUB_ENV}
+        env:
+          REPOSITORY: '${{ github.repository }}'
+      - name: Docker meta
+        id: meta
+        uses: docker/metadata-action@v4
+        with:
+          # list of Docker images to use as base name for tags
+          images: |
+            ghcr.io/${{env.REPOSITORY_LC}}
+
+      # https://github.com/docker/setup-qemu-action
+      - name: Set up QEMU (arm64)
+        if: runner.arch != 'arm64'
+        uses: docker/setup-qemu-action@v2
+        with:
+          platforms: arm64
+      - name: Set up QEMU (x64)
+        if: runner.arch != 'x64'
+        uses: docker/setup-qemu-action@v2
+        with:
+          platforms: amd64
+
+      # https://github.com/docker/setup-buildx-action
+      - name: Set up Docker Buildx
+        id: buildx
+        uses: docker/setup-buildx-action@v2
+      - name: Login to GHCR
+        if: github.event_name != 'pull_request'
+        uses: docker/login-action@v2
+        with:
+          registry: ghcr.io
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Build and push
+        id: build-and-push
+        uses: docker/build-push-action@v4
+        with:
+          context: .devcontainer/
+          file: .devcontainer/Dockerfile
+          platforms: ${{ matrix.arch }}
+          labels: ${{ steps.meta.outputs.labels }}
+          outputs: type=image,name=ghcr.io/${{env.REPOSITORY_LC}},push-by-digest=true,name-canonical=true,push=${{ github.event_name != 'pull_request' }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
+
+      - name: Export digest
+        if: github.event_name != 'pull_request'
+        run: |
+          mkdir -p /tmp/digests
+          digest="${{ steps.build-and-push.outputs.digest }}"
+          touch "/tmp/digests/${digest#sha256:}"
+      - name: Upload digest
+        if: github.event_name != 'pull_request'
+        uses: actions/upload-artifact@v3
+        with:
+          name: digests
+          path: /tmp/digests/*
+          if-no-files-found: error
+          retention-days: 1
+
+  merge:
+    runs-on: ubuntu-latest
+    needs:
+      - build
+    steps:
+      - name: set lower case repository name
+        run: |
+          echo "REPOSITORY_LC=${REPOSITORY,,}-devcontainer" >>${GITHUB_ENV}
+        env:
+          REPOSITORY: '${{ github.repository }}'
+      - name: Download digests
+        if: github.event_name != 'pull_request'
+        uses: actions/download-artifact@v3
+        with:
+          name: digests
+          path: /tmp/digests
+      - name: Set up Docker Buildx
+        if: github.event_name != 'pull_request'
+        uses: docker/setup-buildx-action@v2
+      - name: Docker meta
+        id: meta
+        if: github.event_name != 'pull_request'
+        uses: docker/metadata-action@v4
+        with:
+          # generate Docker tags based on the following events/attributes
+          tags: |
+            type=edge,branch=main
+            type=schedule
+            type=ref,event=branch
+            type=ref,event=pr
+            type=semver,pattern={{version}}
+            type=semver,pattern={{major}}.{{minor}}
+            type=semver,pattern={{major}}
+            type=sha
+          images: ghcr.io/${{env.REPOSITORY_LC}}
+      - name: Login to Docker Hub
+        uses: docker/login-action@v2
+        if: github.event_name != 'pull_request'
+        with:
+          registry: ghcr.io
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+      - name: Create manifest list and push
+        working-directory: /tmp/digests
+        if: github.event_name != 'pull_request'
+        run: |
+          docker buildx imagetools create $(jq -cr '.tags | map("-t " + .) | join(" ")' <<< "$DOCKER_METADATA_OUTPUT_JSON") \
+            $(printf 'ghcr.io/${{env.REPOSITORY_LC}}@sha256:%s ' *)
+      - name: Inspect image
+        if: github.event_name != 'pull_request'
+        run: |
+          docker buildx imagetools inspect ghcr.io/${{env.REPOSITORY_LC}}:${{ steps.meta.outputs.version }}