fix: correct handling of container retrieval

In the previous method, if the container was renamed or there were multiple names attached to the container, fetching the container ID would fail as the regex would only match at the end. Instead of using grep, use the docker 'filter' functionality to fetch the container ID as appropriate.

functions

@@ -119,14 +119,14 @@ service_start() {
   local QUIET="$2"
   local SERVICE_ROOT="$PLUGIN_DATA_ROOT/$SERVICE"
   local SERVICE_NAME="$(get_service_name "$SERVICE")"
-  local ID=$(docker ps -f status=running --no-trunc | grep -e "$SERVICE_NAME$" | awk '{print $1}') || true
+  local ID=$(docker ps -aq --no-trunc --filter "status=running" --filter "name=^/$SERVICE_NAME$" --format '{{ .ID }}') || true
   if [[ -n $ID ]]; then
     [[ -z $QUIET ]] && dokku_log_warn "Service is already started"
     return 0
   fi
 
   dokku_log_info2_quiet "Starting container"
-  local PREVIOUS_ID=$(docker ps -f status=exited --no-trunc | grep -e "$SERVICE_NAME$" | awk '{print $1}') || true
+  local PREVIOUS_ID=$(docker ps -aq --no-trunc --filter "status=exited" --filter "name=^/$SERVICE_NAME$" --format '{{ .ID }}') || true
   local ROOTPASSWORD="$(cat "$SERVICE_ROOT/ROOTPASSWORD")"
   local PASSWORD="$(cat "$SERVICE_ROOT/PASSWORD")"