fix: fix YAML syntax error in compose override block

Heredoc content at column 0 broke YAML block scalar parsing.
Replaced heredoc with echo commands to maintain consistent indentation.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

.gitea/workflows/deploy-dev.yml

@@ -238,12 +238,10 @@ jobs:
           # Create compose override that strips networks (Docker 24 compose
           # fails to create the container when it can't connect networks).
           # We connect networks manually after container creation.
-          cat > /tmp/docker-compose.ci-override.yml << YAMLEOF
+          echo 'services:' > /tmp/docker-compose.ci-override.yml
-services:
+          echo '  dashboard-dev:' >> /tmp/docker-compose.ci-override.yml
-  dashboard-dev:
+          echo '    networks: []' >> /tmp/docker-compose.ci-override.yml
-    networks: []
+          echo 'networks: {}' >> /tmp/docker-compose.ci-override.yml
-networks: {}
-YAMLEOF
 
           # Deploy without networks in compose
           docker compose -f docker-compose.dev.yml -f /tmp/docker-compose.ci-override.yml -p nas-dashboard-dev up -d --pull never