Update CI workflow to use custom Docker image for build and streamline Docker push job

.gitea/workflows/ci.yml

@@ -8,7 +8,7 @@ jobs:
   build-test:
     runs-on: docker
     container:
-      image: golang:1.26
+      image: gitea.jeanlucmakiola.de/makiolaj/docker-node-and-go:latest
     steps:
       - name: Checkout code
         uses: actions/checkout@v6
@@ -28,25 +28,24 @@ jobs:
     runs-on: dind
     needs: build-test
     if: gitea.event_name == 'push'
-    container:
-      image: docker:cli
-    services:
-      dind:
-        image: docker:dind
-        options: --privileged
-        env:
-          DOCKER_TLS_CERTDIR: ""
     env:
       DOCKER_HOST: tcp://dind:2375
     steps:
-      - name: Checkout code
-        uses: actions/checkout@v6
+      - name: Install dependencies
+        run: apk add --no-cache git
+      - name: Checkout
+        run: |
+          GITEA_HOST="${{ gitea.server_url }}"
+          GITEA_HOST="${GITEA_HOST#https://}"
+          GITEA_HOST="${GITEA_HOST#http://}"
+          git clone "https://oauth2:${{ secrets.GITEA_TOKEN }}@${GITEA_HOST}/${{ gitea.repository }}.git" .
+          git checkout ${{ gitea.sha }}
       - name: Log in to Gitea registry
         run: |
           REGISTRY="${{ gitea.server_url }}"
           REGISTRY="${REGISTRY#https://}"
           REGISTRY="${REGISTRY#http://}"
-          echo "${{ secrets.GITEA_TOKEN }}" | docker login "$REGISTRY" -u "${{ gitea.actor }}" --password-stdin
+          echo "${{ secrets.REGISTRY_TOKEN }}" | docker login "$REGISTRY" -u "${{ gitea.actor }}" --password-stdin
       - name: Build and push
         run: |
           REGISTRY="${{ gitea.server_url }}"