Fix: Install git and bash in docker:latest image for build job

docker:latest is minimal Alpine image without git/bash.
Added step to install git and bash before checkout.

.gitea/workflows/production-deploy.yml

@@ -131,6 +131,12 @@ jobs:
 
       - name: Setup Docker Buildx
         run: |
+          # Install Docker Buildx if not present
+          if ! docker buildx version &>/dev/null; then
+            mkdir -p ~/.docker/cli-plugins
+            curl -L "https://github.com/docker/buildx/releases/latest/download/buildx-$(uname -s | tr '[:upper:]' '[:lower:]')-$(uname -m)" -o ~/.docker/cli-plugins/docker-buildx
+            chmod +x ~/.docker/cli-plugins/docker-buildx
+          fi
           docker buildx create --name builder --use || docker buildx use builder
           docker buildx inspect --bootstrap