Conform to function declaration standards

- declare desc variable
- declare all positional arguments
- set the cmd
- properly handle DOKKU_APP_NAME

subcommands/connect

@@ -5,11 +5,15 @@ source "$PLUGIN_BASE_PATH/common/functions"
 source "$(dirname "$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)")/functions"
 
 mysql-connect-cmd() {
-  [[ -z $2 ]] && dokku_log_fail "Please specify a name for the service"
-  verify_service_name "$2"
-  SERVICE="$2"; SERVICE_ROOT="$PLUGIN_DATA_ROOT/$SERVICE"
+  declare desc="connect via mysql to a $PLUGIN_SERVICE service"
+  local cmd="$PLUGIN_COMMAND_PREFIX:connect" argv=("$@"); [[ ${argv[0]} == "$cmd" ]] && shift 1
+  declare SERVICE="$1"
+
+  [[ -z "$SERVICE" ]] && dokku_log_fail "Please specify a name for the service"
+  verify_service_name "$SERVICE"
+  SERVICE_ROOT="$PLUGIN_DATA_ROOT/$SERVICE"
   SERVICE_NAME="$(get_service_name "$SERVICE")"
-  PASSWORD=$(cat "$SERVICE_ROOT/PASSWORD")
+  PASSWORD="$(cat "$SERVICE_ROOT/PASSWORD")"
   has_tty && SERVICE_TTY_OPTS="-t"
 
   docker exec -i $SERVICE_TTY_OPTS "$SERVICE_NAME" mysql --user=mysql --password="$PASSWORD" --database="$SERVICE"