🔧 Enhance Gitea deployment workflows and fix nginx configuration

- Added new CI/CD workflow `ci-cd-reliable.yml` for reliable deployments with database support.
- Created `docker-compose.zero-downtime-fixed.yml` to address nginx configuration issues for zero-downtime deployments.
- Improved existing workflows to check for nginx configuration file and create a fallback if missing.
- Updated `DEPLOYMENT-FIXES.md` to document new workflows and fixes.

✅ These changes improve deployment reliability and ensure proper nginx configuration for seamless updates.

.gitea/workflows/ci-cd-zero-downtime-fixed.yml

@@ -93,13 +93,50 @@ jobs:
           export MY_INFO_PASSWORD="${{ secrets.MY_INFO_PASSWORD }}"
           export ADMIN_BASIC_AUTH="${{ secrets.ADMIN_BASIC_AUTH }}"
           
+          # Check if nginx config file exists
+          echo "🔍 Checking nginx configuration file..."
+          if [ ! -f "nginx-zero-downtime.conf" ]; then
+            echo "⚠️ nginx-zero-downtime.conf not found, creating fallback..."
+            cat > nginx-zero-downtime.conf << 'EOF'
+events {
+    worker_connections 1024;
+}
+http {
+    upstream portfolio_backend {
+        server portfolio-app-1:3000 max_fails=3 fail_timeout=30s;
+        server portfolio-app-2:3000 max_fails=3 fail_timeout=30s;
+    }
+    server {
+        listen 80;
+        server_name _;
+        location /health {
+            access_log off;
+            return 200 "healthy\n";
+            add_header Content-Type text/plain;
+        }
+        location / {
+            proxy_pass http://portfolio_backend;
+            proxy_set_header Host $host;
+            proxy_set_header X-Real-IP $remote_addr;
+            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+            proxy_set_header X-Forwarded-Proto $scheme;
+        }
+    }
+}
+EOF
+          fi
+          
           # Stop old containers
           echo "🛑 Stopping old containers..."
-          docker compose -f docker-compose.zero-downtime.yml down || true
+          docker compose -f docker-compose.zero-downtime-fixed.yml down || true
+          
+          # Clean up any orphaned containers
+          echo "🧹 Cleaning up orphaned containers..."
+          docker compose -f docker-compose.zero-downtime-fixed.yml down --remove-orphans || true
           
           # Start new containers
           echo "🚀 Starting new containers..."
-          docker compose -f docker-compose.zero-downtime.yml up -d
+          docker compose -f docker-compose.zero-downtime-fixed.yml up -d
           
           echo "✅ Zero downtime deployment completed!"
         env:
@@ -121,7 +158,7 @@ jobs:
           
           # Check if all containers are running
           echo "📊 Checking container status..."
-          docker compose -f docker-compose.zero-downtime.yml ps
+          docker compose -f docker-compose.zero-downtime-fixed.yml ps
           
           # Wait for application containers to be healthy
           echo "🏥 Waiting for application containers to be healthy..."
@@ -153,7 +190,7 @@ jobs:
           
           # Check container status
           echo "📊 Container status:"
-          docker compose -f docker-compose.zero-downtime.yml ps
+          docker compose -f docker-compose.zero-downtime-fixed.yml ps
           
           # Check individual application containers
           echo "🏥 Checking individual application containers..."
@@ -203,7 +240,7 @@ jobs:
       - name: Show container status
         run: |
           echo "📊 Container status:"
-          docker compose -f docker-compose.zero-downtime.yml ps
+          docker compose -f docker-compose.zero-downtime-fixed.yml ps
 
       - name: Cleanup old images
         run: |