feat: Auto-derive Nginx server_name & Certbot domains from APP_URL

- Nginx server_name now automatically derived from APP_URL
- CERTBOT_DOMAINS automatically derived from APP_URL if not set
- Extracts domain by removing protocol (https://) and trailing slash
- Fallback to _ (catch-all) if APP_URL not set

Benefits:
- Single source of truth (APP_URL) for domain configuration
- No need to set NGINX_SERVER_NAME or CERTBOT_DOMAINS separately
- Cleaner configuration for Laravel applications

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

Author: Rene-Roscher

.gitignore

@@ -16,3 +16,8 @@ Thumbs.db
 # Temporary
 *.tmp
 *.temp
+
+# Project-specific configs (not part of universal image)
+docker-compose.livck*.yml
+.env.livck*
+LIVCK-*.md

README.md

@@ -94,10 +94,11 @@ services:
       OPCACHE_JIT: tracing
       OPCACHE_JIT_BUFFER_SIZE: 200M
 
-      # SSL
+      # SSL (CERTBOT_DOMAINS auto-derived from APP_URL if not set)
+      APP_URL: https://example.com/
       CERTBOT_ENABLED: "true"
-      CERTBOT_DOMAINS: example.com
       CERTBOT_EMAIL: admin@example.com
+      # CERTBOT_DOMAINS: example.com  # Optional - auto-derived from APP_URL
 
       # Laravel
       LARAVEL_OPTIMIZE_ON_BOOT: "true"
@@ -202,12 +203,15 @@ NGINX_CLIENT_MAX_BODY_SIZE=200M
 
 ### SSL/Certbot
 ```bash
+APP_URL=https://example.com/            # Auto-derived for CERTBOT_DOMAINS (strips protocol)
 CERTBOT_ENABLED=true
 CERTBOT_EMAIL=admin@example.com
-CERTBOT_DOMAINS=example.com,www.example.com
+CERTBOT_DOMAINS=example.com             # Optional - auto-derived from APP_URL if not set
 CERTBOT_AUTO_RENEW=true
 ```
 
+**Auto-Detection:** If `CERTBOT_DOMAINS` is empty, it's automatically derived from `APP_URL` by removing protocol (`https://`) and trailing slash.
+
 ### Laravel
 ```bash
 LARAVEL_OPTIMIZE_ON_BOOT=true

rootfs/etc/cont-init.d/01-setup-configs.sh

@@ -3,6 +3,19 @@ set -e
 
 echo "[Init] Generating runtime configurations from ENV variables..."
 
+########################################
+# Auto-derive Nginx server_name from APP_URL
+########################################
+if [ -n "${APP_URL}" ]; then
+    # Extract domain from APP_URL (remove protocol and trailing slash)
+    export NGINX_SERVER_NAME=$(echo "${APP_URL}" | sed -E 's~^https?://~~' | sed 's~/$~~')
+    echo "[Init] Auto-derived server_name from APP_URL: ${NGINX_SERVER_NAME}"
+else
+    # Fallback to catch-all
+    export NGINX_SERVER_NAME="${NGINX_SERVER_NAME:-_}"
+    echo "[Init] Using server_name: ${NGINX_SERVER_NAME}"
+fi
+
 ########################################
 # Socket Type Detection (используется für PHP-FPM UND Nginx)
 ########################################
@@ -245,7 +258,7 @@ export APP_ENV=${APP_ENV:-production}
 # FPM_PASS is already set at the top of the script
 
 # Substitute ENV variables in Laravel-optimized nginx config
-envsubst '${NGINX_WEBROOT} ${FPM_PASS} ${APP_ENV} ${NGINX_GZIP} ${NGINX_GZIP_COMP_LEVEL} ${NGINX_GZIP_MIN_LENGTH} ${NGINX_FASTCGI_BUFFER_SIZE} ${NGINX_FASTCGI_BUFFERS} ${NGINX_FASTCGI_BUSY_BUFFERS_SIZE} ${NGINX_FASTCGI_CONNECT_TIMEOUT} ${NGINX_FASTCGI_SEND_TIMEOUT} ${NGINX_FASTCGI_READ_TIMEOUT}' \
+envsubst '${NGINX_SERVER_NAME} ${NGINX_WEBROOT} ${FPM_PASS} ${APP_ENV} ${NGINX_GZIP} ${NGINX_GZIP_COMP_LEVEL} ${NGINX_GZIP_MIN_LENGTH} ${NGINX_FASTCGI_BUFFER_SIZE} ${NGINX_FASTCGI_BUFFERS} ${NGINX_FASTCGI_BUSY_BUFFERS_SIZE} ${NGINX_FASTCGI_CONNECT_TIMEOUT} ${NGINX_FASTCGI_SEND_TIMEOUT} ${NGINX_FASTCGI_READ_TIMEOUT}' \
     < /etc/templates/nginx-laravel.conf > /etc/nginx/http.d/default.conf
 
 echo "[Init] Configurations generated successfully!"

rootfs/etc/cont-init.d/03-certbot-setup.sh

@@ -15,9 +15,17 @@ if [ -z "${CERTBOT_EMAIL}" ] || [ "${CERTBOT_EMAIL}" = "admin@example.com" ]; th
     CERTBOT_EMAIL=""
 fi
 
+# Auto-derive CERTBOT_DOMAINS from APP_URL if not set
 if [ -z "${CERTBOT_DOMAINS}" ] || [ "${CERTBOT_DOMAINS}" = "example.com,www.example.com" ]; then
-    echo "[Certbot] WARNING: CERTBOT_DOMAINS not set or using default. SSL certificates will not be obtained."
-    exit 0
+    if [ -n "${APP_URL}" ]; then
+        # Extract domain from APP_URL (remove protocol and trailing slash)
+        CERTBOT_DOMAINS=$(echo "${APP_URL}" | sed -E 's~^https?://~~' | sed 's~/$~~')
+        export CERTBOT_DOMAINS
+        echo "[Certbot] Auto-derived domain from APP_URL: ${CERTBOT_DOMAINS}"
+    else
+        echo "[Certbot] WARNING: CERTBOT_DOMAINS not set or using default. SSL certificates will not be obtained."
+        exit 0
+    fi
 fi
 
 # Setup Certbot cron for auto-renewal

rootfs/etc/templates/nginx-laravel.conf

@@ -5,7 +5,7 @@ server {
     listen 80 default_server;
     listen [::]:80 default_server;
 
-    server_name _;
+    server_name ${NGINX_SERVER_NAME};
     root ${NGINX_WEBROOT};
     index index.php index.html;