diff --git a/docker/alpine/init.sh b/docker/alpine/init.sh
index 548faa9a..ccd04cd4 100755
--- a/docker/alpine/init.sh
+++ b/docker/alpine/init.sh
@@ -11,7 +11,7 @@ fi
 has_config_arg=0
 for arg in "$@"; do
   case "$arg" in
-  --config=*)
+  --config|--config=*|-c|-c=*)
     has_config_arg=1
     break
     ;;