fix: CI/CD build errors

- Simplified go.mod with all dependencies
- Fixed generateRandomSecret function
- Updated Dockerfile to use debian bookworm
- Simplified CI workflow to single job
- Fixed Gitea Actions syntax (github.ref)

.gitea/workflows/build.yml

@@ -12,7 +12,7 @@ env:
   IMAGE_NAME: anticaptcha
 
 jobs:
-  build-frontend:
+  build:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
@@ -21,66 +21,20 @@ jobs:
         uses: actions/setup-node@v4
         with:
           node-version: '20'
-          cache: 'npm'
-          cache-dependency-path: web/package-lock.json
 
-      - name: Install dependencies
+      - name: Install frontend dependencies
         working-directory: ./web
-        run: npm ci
+        run: npm install
 
       - name: Build frontend
         working-directory: ./web
         run: npm run build
 
-      - name: Upload frontend artifacts
-        uses: actions/upload-artifact@v4
-        with:
-          name: frontend
-          path: web/dist
-
-  build-backend:
-    runs-on: ubuntu-latest
-    needs: build-frontend
-    steps:
-      - uses: actions/checkout@v4
-
-      - name: Download frontend artifacts
-        uses: actions/download-artifact@v4
-        with:
-          name: frontend
-          path: web/dist
-
-      - name: Setup Go
-        uses: actions/setup-go@v5
-        with:
-          go-version: '1.22'
-
-      - name: Build Go binary
-        run: |
-          CGO_ENABLED=0 GOOS=linux go build -ldflags="-s -w" -o anticaptcha ./cmd/server
-
-      - name: Upload backend artifacts
-        uses: actions/upload-artifact@v4
-        with:
-          name: backend
-          path: anticaptcha
-
-  build-docker:
-    runs-on: ubuntu-latest
-    needs: build-frontend
-    steps:
-      - uses: actions/checkout@v4
-
-      - name: Download frontend artifacts
-        uses: actions/download-artifact@v4
-        with:
-          name: frontend
-          path: web/dist
-
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
 
       - name: Login to Registry
+        if: github.event_name != 'pull_request'
         uses: docker/login-action@v3
         with:
           registry: ${{ env.REGISTRY }}
@@ -95,23 +49,20 @@ jobs:
           tags: |
             type=ref,event=branch
             type=semver,pattern={{version}}
-            type=semver,pattern={{major}}.{{minor}}
             type=sha
 
       - name: Build and push
         uses: docker/build-push-action@v5
         with:
           context: .
-          push: true
+          push: ${{ github.event_name != 'pull_request' }}
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}
-          cache-from: type=gha
-          cache-to: type=gha,mode=max
 
   deploy:
     runs-on: ubuntu-latest
-    needs: build-docker
-    if: startsWith(gitea.ref, 'refs/tags/')
+    needs: build
+    if: startsWith(github.ref, 'refs/tags/')
     steps:
       - name: Deploy to server
         uses: appleboy/ssh-action@v1.0.3