ci: Add an action for the devcontainer

.github/workflows/devcontainer.yml

@@ -0,0 +1,50 @@
+name: Devcontainer
+on:
+  push:
+    branches:
+      - main
+      - pmm-*
+  workflow_dispatch:
+
+jobs:
+  devcontainer:
+    name: Build
+    runs-on: ubuntu-22.04
+    timeout-minutes: 15
+    strategy:
+      fail-fast: false
+    permissions:
+      packages: write
+
+    env:
+      LAB_DEVCONTAINER_IMAGE: perconalab/pmm-server:dev-container
+      GH_DEVCONTAINER_IMAGE: ghcr.io/atymchuk/pmm-server-dev:rh7
+
+    steps:
+      - name: Check out code
+        uses: actions/checkout@v3
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+
+      - name: Login to the registry
+        uses: docker/login-action@v2
+        with:
+          registry: ghcr.io
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Build and push
+        uses: docker/build-push-action@v4
+        with:
+          file: ./devcontainer.Dockerfile
+          push: true
+          tags: ${{ env.GH_DEVCONTAINER_IMAGE }}
+
+      - name: Run debug commands on failure
+        if: ${{ failure() }}
+        run: |
+          pwd
+          env
+          go env
+          git status