ci: deploy demo-app with local docker actions

.gitea/workflows/docker-deploy.yml

@@ -0,0 +1,49 @@
+name: Docker Deploy
+
+on:
+  push:
+    branches:
+      - main
+  workflow_dispatch:
+
+jobs:
+  build-deploy:
+    runs-on: docker-cli
+    container:
+      image: docker:28-cli
+      volumes:
+        - /var/run/docker.sock:/var/run/docker.sock
+        - /mnt/d/docker:/mnt/d/docker
+    steps:
+      - name: Build Docker image
+        run: |
+          set -eu
+          apk add --no-cache git
+          rm -rf /tmp/demo-app-source
+          git clone /mnt/d/docker/gitea/data/git/gitea-repositories/admin/demo-app.git /tmp/demo-app-source
+          cd /tmp/demo-app-source
+          if [ -n "${GITHUB_SHA:-}" ]; then
+            git checkout "${GITHUB_SHA}"
+          fi
+          short_sha="$(git rev-parse --short=12 HEAD)"
+          docker build --pull=false -t "local/demo-app:ci-${short_sha}" -t local/demo-app:ci .
+
+      - name: Deploy with Docker Compose
+        run: |
+          set -eu
+          cd /mnt/d/docker/demo-app
+          docker compose up -d
+
+      - name: Verify container
+        run: |
+          set -eu
+          for i in $(seq 1 30); do
+            status="$(docker inspect -f '{{if .State.Health}}{{.State.Health.Status}}{{else}}{{.State.Status}}{{end}}' docker-demo-app 2>/dev/null || true)"
+            if [ "${status}" = "healthy" ] || [ "${status}" = "running" ]; then
+              docker run --rm --network edge-net curlimages/curl:8.11.1 -fsS http://docker-demo-app:8080/ >/dev/null
+              exit 0
+            fi
+            sleep 2
+          done
+          docker logs --tail 80 docker-demo-app || true
+          exit 1