Add options to entrypoint.sh

entrypoint.sh

@@ -1,14 +1,30 @@
 #!/usr/bin/env bash
 
 set -e
-
 source "${SALT_RUNTIME_DIR}/functions.sh"
 
-# Copy minion keys
-copy_minion_keys
+[[ ${DEBUG} == true ]] && set -x
+
+case ${1} in
+  app:start)
 
-# Configure salt-master
 configure_salt_master
 
+    case ${1} in
+      app:start)
+        copy_minion_keys
 echo "Starting salt-master..."
 exec salt-master
+        ;;
+    esac
+    ;;
+  app:help)
+    echo "Available options:"
+    echo "  app:start       - Start salt-master service. (default)"
+    echo "  app:help        - Displays this help."
+    echo "  [command]       - Execute the specified command, eg. bash."
+    ;;
+  *)
+    exec "$@"
+    ;;
+esac