Fix issue with mounting custom SSL certificates due to read-only volume mount (#3598)

docker-compose.dev.yml

@@ -32,4 +32,4 @@ services:
     build:
       context: ../docker-azuracast-radio
     volumes:
-      - ./util/local_ssl:/etc/nginx/certs:ro
+      - ./util/local_ssl:/etc/nginx/certs

docker-compose.sample.yml

@@ -263,7 +263,7 @@ services:
     volumes:
       - station_data:/var/azuracast/stations
       - shoutcast2_install:/var/azuracast/servers/shoutcast2
-      - letsencrypt:/etc/nginx/certs:ro
+      - letsencrypt:/etc/nginx/certs
       - tmp_data:/var/azuracast/www_tmp
     networks:
       - frontend
@@ -291,4 +291,4 @@ volumes:
   www_vendor: { }
   tmp_data: { }
   redis_data: { }
-  backups: { }
+  backups: { }