update Docker and Nginx configuration to support Certbot for SSL certificate management

docker-compose.yml

@@ -17,7 +17,7 @@ services:
       - appnet
     restart: unless-stopped
   nginx:
-    image: nginx:latest
+    image: nginx:alpine-slim
     ports:
       - "80:80"
       - "443:443"
@@ -33,9 +33,24 @@ services:
         source: app_run
         target: /app/run
         read_only: false
+      - type: bind
+        source: ./certbot/www
+        target: /var/www/certbot
+        read_only: true
     restart: unless-stopped
     networks:
       - appnet
+  certbot:
+    image: certbot/certbot:latest
+    volumes:
+      - type: bind
+        source: ./certbot/www
+        target: /var/www/certbot
+        read_only: false
+      - type: bind
+        source: ./certbot/conf
+        target: /etc/letsencrypt
+        read_only: false
 volumes:
   app_run:
     driver: local