diff --git a/bin/run-script b/bin/run-script
index da8fff2..0d667c4 100755
--- a/bin/run-script
+++ b/bin/run-script
@@ -18,20 +18,33 @@ fi
 
 function usage() {
   echo "Usage:
-    bin/run-script [SCRIPT...] [SCRIPT_ARGS..]
+    bin/run-script [-e 'VAR1=value VAR2=value'] [SCRIPT...] [SCRIPT_ARGS..]
     bin/run-script [OPTIONS]
 
 Options:
     help              prints this help
     ls                prints a list of all available scripts
+    -e                space-separated list of environment variables (optional)
 
 Examples:
     bin/run-script scripts/create_project.js --user-id=649c3f45711ad101a13de737
+    bin/run-script -e 'PROJECT_ID=5ac1011aa13de547c3fd' scripts/delete_dangling_file_refs.js
     bin/run-script ls"
 }
 
 
 function __main__() {
+  local env_vars=''
+  while getopts ":e:" opt
+  do
+    case $opt in
+      e ) env_vars="${OPTARG}" ;;
+      \?) usage && exit ;;
+      : ) usage && exit ;;
+    esac
+  done
+  shift $(( OPTIND -1 ))
+
   if [[ "${1:-null}" == "null" ]] \
     || [[ "${1:-null}" == "help" ]] \
     || [[ "${1:-null}" == "--help" ]] ; then
@@ -45,7 +58,8 @@ function __main__() {
     exit
   fi
 
-  local run_cmd="cd /overleaf/services/web; node $@"
+  local container_env="source /etc/overleaf/env.sh || source /etc/sharelatex/env.sh && source /etc/container_environment.sh"
+  local run_cmd="${container_env} && cd /overleaf/services/web && ${env_vars} node $@"
   exec "$TOOLKIT_ROOT/bin/docker-compose" exec sharelatex bash -c "$run_cmd"
 }