Improve SSL and ACME documentation

- Clarify that EASYHAPROXY_CERTBOT_AUTOCONFIG or CERTBOT_SERVER is required
- Add complete docker-compose.yml examples for ACME setup
- Explain SSL termination at HAProxy level vs backend containers
- Reorganize SSL docs to emphasize volume method over label method
- Add troubleshooting section for common ACME warnings
- Clarify certificate storage paths and selection priority
- Add examples showing both ACME and manual certificates together

Resolves confusion about ACME configuration requirements and makes
it clear that volume-mounted certificates are the recommended method
for manual SSL certificates.

deploy/docker/docker-compose.yml

@@ -26,15 +26,12 @@ services:
       - "443:443/tcp"
       - "1936:1936/tcp"
 
-    networks:
-      - easyhaproxy
-
 volumes:
   certs_certbot:
-    external: true
+#    external: true
   certs_haproxy:
-    external: true
+#    external: true
 
 networks:
   easyhaproxy:
-    external: true
+#    external: true