fix: Gitea Traefik routing and connection pool optimization

- Remove middleware reference from Gitea Traefik labels (caused routing issues)
- Optimize Gitea connection pool settings (MAX_IDLE_CONNS=30, authentication_timeout=180s)
- Add explicit service reference in Traefik labels
- Fix intermittent 504 timeouts by improving PostgreSQL connection handling

Fixes Gitea unreachability via git.michaelschiemer.de

docker/entrypoint.sh

@@ -1,5 +1,14 @@
 #!/bin/bash
-set -e
+# Don't use 'set -e' globally - we'll handle errors explicitly for critical operations
+# This allows non-critical operations (like permission changes) to fail without crashing the container
+
+echo "=========================================="
+echo "🚀 Container Entrypoint Starting"
+echo "=========================================="
+echo "Command: $@"
+echo "Working directory: $(pwd)"
+echo "User: $(whoami)"
+echo ""
 
 echo "🔐 Loading secrets..."
 
@@ -109,20 +118,134 @@ echo ""
 echo "📊 Environment variables:"
 env | grep -E "DB_|APP_" | grep -Ev "(PASSWORD|KEY|SECRET)" || true
 
+echo ""
+echo "📂 Checking application directory structure..."
+if [ -d "/var/www/html" ]; then
+    echo "✅ /var/www/html exists"
+    echo "   Contents: $(ls -la /var/www/html 2>/dev/null | head -5 | wc -l) items"
+    if [ -f "/var/www/html/composer.json" ]; then
+        echo "✅ composer.json found"
+    else
+        echo "⚠️  Warning: composer.json not found in /var/www/html"
+    fi
+    if [ -f "/var/www/html/public/index.php" ] || [ -f "/var/www/html/index.php" ]; then
+        echo "✅ Application entry point found"
+    else
+        echo "⚠️  Warning: Application entry point (index.php) not found"
+    fi
+else
+    echo "❌ ERROR: /var/www/html does not exist!"
+    exit 1
+fi
+
 echo ""
 echo "🛠️ Adjusting filesystem permissions..."
-chown -R www-data:www-data /var/www/html/storage /var/www/html/bootstrap/cache 2>/dev/null || true
-find /var/www/html/storage /var/www/html/bootstrap/cache -type d -exec chmod 775 {} \; 2>/dev/null || true
-find /var/www/html/storage /var/www/html/bootstrap/cache -type f -exec chmod 664 {} \; 2>/dev/null || true
+
+# Non-critical operations - don't fail if these don't work
+if ! chown -R www-data:www-data /var/www/html/storage /var/www/html/bootstrap/cache 2>/dev/null; then
+    echo "⚠️  Warning: Failed to change ownership of storage/cache directories (may be volume mounts)"
+fi
+
+if ! find /var/www/html/storage /var/www/html/bootstrap/cache -type d -exec chmod 775 {} \; 2>/dev/null; then
+    echo "⚠️  Warning: Failed to set directory permissions"
+fi
+
+if ! find /var/www/html/storage /var/www/html/bootstrap/cache -type f -exec chmod 664 {} \; 2>/dev/null; then
+    echo "⚠️  Warning: Failed to set file permissions"
+fi
+
+# Verify required directories exist
+echo ""
+echo "📁 Verifying required directories..."
+REQUIRED_DIRS=(
+    "/var/www/html"
+    "/var/www/html/storage"
+    "/var/www/html/bootstrap"
+    "/var/www/html/bootstrap/cache"
+)
+
+for dir in "${REQUIRED_DIRS[@]}"; do
+    if [ ! -d "$dir" ]; then
+        echo "⚠️  Warning: Required directory $dir does not exist, creating..."
+        mkdir -p "$dir" 2>/dev/null || echo "❌ Failed to create $dir"
+    fi
+done
 
 # Start PHP-FPM in background (inherits all environment variables)
 echo ""
 echo "🚀 Starting PHP-FPM..."
-php-fpm &
 
-# Wait for PHP-FPM to be ready
-sleep 2
+# Check if PHP-FPM binary exists
+if ! command -v php-fpm &> /dev/null; then
+    echo "❌ ERROR: php-fpm command not found!"
+    exit 1
+fi
+
+# Start PHP-FPM and capture its PID
+php-fpm &
+PHP_FPM_PID=$!
+
+# Wait for PHP-FPM to be ready and verify it's running
+echo "⏳ Waiting for PHP-FPM to start..."
+MAX_WAIT=10
+WAIT_COUNT=0
+while [ $WAIT_COUNT -lt $MAX_WAIT ]; do
+    if kill -0 $PHP_FPM_PID 2>/dev/null; then
+        # Check if PHP-FPM is listening on the socket
+        if [ -S /var/run/php/php-fpm.sock ] || [ -S /run/php/php-fpm.sock ] || netstat -tuln 2>/dev/null | grep -q ":9000"; then
+            echo "✅ PHP-FPM is running (PID: $PHP_FPM_PID)"
+            break
+        fi
+    else
+        echo "❌ ERROR: PHP-FPM process died immediately after startup!"
+        exit 1
+    fi
+    sleep 1
+    WAIT_COUNT=$((WAIT_COUNT + 1))
+done
+
+if [ $WAIT_COUNT -ge $MAX_WAIT ]; then
+    echo "⚠️  Warning: PHP-FPM may not be fully ready after ${MAX_WAIT}s, but continuing..."
+    echo "   This may indicate a configuration issue. Check PHP-FPM logs if problems occur."
+fi
+
+# Log PHP-FPM status
+echo ""
+echo "📋 PHP-FPM Status:"
+if kill -0 $PHP_FPM_PID 2>/dev/null; then
+    echo "   Process: Running (PID: $PHP_FPM_PID)"
+    if [ -S /var/run/php/php-fpm.sock ]; then
+        echo "   Socket: /var/run/php/php-fpm.sock (exists)"
+    elif [ -S /run/php/php-fpm.sock ]; then
+        echo "   Socket: /run/php/php-fpm.sock (exists)"
+    elif netstat -tuln 2>/dev/null | grep -q ":9000"; then
+        echo "   Socket: TCP port 9000 (listening)"
+    else
+        echo "   Socket: Not found (may be using different configuration)"
+    fi
+else
+    echo "   Process: Not running (PID check failed)"
+fi
+
+# Verify nginx binary exists
+if ! command -v nginx &> /dev/null; then
+    echo "❌ ERROR: nginx command not found!"
+    exit 1
+fi
+
+# Test nginx configuration before starting
+echo ""
+echo "🔍 Testing nginx configuration..."
+if ! nginx -t 2>&1; then
+    echo "❌ ERROR: nginx configuration test failed!"
+    exit 1
+fi
 
 # Start nginx in foreground (inherits all environment variables)
+echo ""
 echo "🚀 Starting nginx..."
+echo "=========================================="
+echo "✅ All startup checks passed"
+echo "🚀 Services starting..."
+echo "=========================================="
 exec nginx -g 'daemon off;'