ci: unified workflow - single job, DOCKER_HOST, build+push on all events (#7)

- Single job (no split test/build-push)
- DOCKER_HOST=tcp://localhost:2375 for dind
- Build + push on PRs too (verify before merge)
- workflow_dispatch for manual trigger

---------

Reviewed-on: #7

.gitea/workflows/ci.yaml

@@ -5,19 +5,23 @@ on:
     branches: [main]
   pull_request:
     branches: [main]
+  workflow_dispatch:
 
 env:
   GOPRIVATE: forgejo.riotpiao.com
   REGISTRY: forgejo.riotpiao.com
   IMAGE: forgejo.riotpiao.com/rock/poimen-workflows
+  DOCKER_HOST: tcp://localhost:2375
 
 jobs:
-  test:
-    name: Test
+  ci:
+    name: CI
     runs-on: golang
     steps:
-      - name: Install Node.js for actions runtime
-        run: apt-get update && apt-get install -y nodejs
+      - name: Install Node.js and Docker
+        run: |
+          apt-get update
+          apt-get install -y nodejs docker.io
 
       - name: Checkout code
         uses: actions/checkout@v4
@@ -34,18 +38,6 @@ jobs:
       - name: Build binary
         run: CGO_ENABLED=0 GOOS=linux go build -o /tmp/poimen-worker ./cmd/worker
 
-  build-push:
-    name: Build & Push Image
-    needs: test
-    if: github.event_name == 'push' && github.ref == 'refs/heads/main'
-    runs-on: golang
-    steps:
-      - name: Install Node.js and Docker
-        run: apt-get update && apt-get install -y nodejs docker.io
-
-      - name: Checkout code
-        uses: actions/checkout@v4
-
       - name: Get short SHA
         id: sha
         run: echo "short_sha=$(git rev-parse --short HEAD)" >> $GITHUB_OUTPUT
@@ -58,18 +50,17 @@ jobs:
           REGISTRY_USER: ${{ secrets.FORGEJO_REGISTRY_USER }}
           REGISTRY_TOKEN: ${{ secrets.FORGEJO_REGISTRY_TOKEN }}
 
-      - name: Build and push image
+      - name: Build Docker image
         run: |
           docker build --no-cache \
             -t "${IMAGE}:${{ steps.sha.outputs.short_sha }}" \
-            -t "${IMAGE}:latest" \
-            .
+            -t "${IMAGE}:latest" .
 
       - name: Push Docker image
         run: |
           docker push "${IMAGE}:${{ steps.sha.outputs.short_sha }}"
           docker push "${IMAGE}:latest"
-          echo "✓ Image pushed: ${IMAGE}:${{ steps.sha.outputs.short_sha }}"
+          echo "✓ Pushed: ${IMAGE}:${{ steps.sha.outputs.short_sha }}"
 
       - name: Prune unused images
         run: docker image prune -a --force 2>&1 | tail -3 || true