Changed default value of HTTP[S]_PROXY

Author: gitmopp

docker-compose.yml

@@ -15,8 +15,8 @@ services:
             context: .
             args:
                 - OPENCVE_VERSION=${OPENCVE_VERSION}
-                - HTTP_PROXY=${HTTP_PROXY}
-                - HTTPS_PROXY=${HTTPS_PROXY}
+                - HTTP_PROXY=${HTTP_PROXY:-}
+                - HTTPS_PROXY=${HTTPS_PROXY:-}
             dockerfile: Dockerfile
         depends_on:
             - postgres