Refactor CI workflow to use custom checkout logic and update build paths

.gitea/workflows/ci.yaml

@@ -10,7 +10,13 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        run: |
+          git config --global http.sslCAInfo /certs/ca.crt
+          rm -rf $GITEA_WORKSPACE
+          mkdir -p $GITEA_WORKSPACE
+          git clone https://gitea.home.arpa/nik/watch-party $GITEA_WORKSPACE
+        env:
+          GIT_SSL_CAINFO: /certs/ca.crt
 
       - name: Write deploy key
         run: |
@@ -22,13 +28,15 @@ jobs:
           echo "${{ secrets.REGISTRY_PASSWORD }}" | docker login gitea.home.arpa \
             --username ${{ secrets.REGISTRY_USERNAME }} \
             --password-stdin
+        env:
+          GIT_SSL_CAINFO: /certs/ca.crt
 
       - name: Build and push backend
         run: |
           docker build \
             --platform linux/amd64 \
             -t gitea.home.arpa/nik/watch-party-backend:latest \
-            ./backend
+            $GITEA_WORKSPACE/backend
           docker push gitea.home.arpa/nik/watch-party-backend:latest
 
       - name: Build and push frontend
@@ -36,7 +44,7 @@ jobs:
           docker build \
             --platform linux/amd64 \
             -t gitea.home.arpa/nik/watch-party-frontend:latest \
-            ./frontend
+            $GITEA_WORKSPACE/frontend
           docker push gitea.home.arpa/nik/watch-party-frontend:latest
 
       - name: Deploy to Mac Mini