fix: use node:20-alpine + apk install docker-cli for Node.js + Docker

.gitea/workflows/ci.yml

@@ -16,7 +16,7 @@ jobs:
   build-and-push:
     runs-on: ubuntu-latest
     container:
-      image: docker:24-cli
+      image: node:20-alpine
       env:
         DOCKER_HOST: tcp://localhost:2375
         DOCKER_TLS_VERIFY: "0"
@@ -26,6 +26,9 @@ jobs:
         with:
           ssl-verify: false
 
+      - name: Install Docker CLI
+        run: apk add --no-cache docker-cli
+
       - name: Set image tag
         id: tag
         run: echo "TAG=${GITHUB_SHA::8}" >> $GITHUB_OUTPUT