Update docker file to better handle starting without an existing game folder

Dockerfile

@@ -7,7 +7,7 @@
 # Usage:
 #    cd to a folder where you want your game data to be (or where it already is).
 #
-#	docker run -it -p 4000:4000 -p 4001:4001 -p 4005:4005 -v $PWD:/usr/src/game evennia/evennia
+#	docker run -it --rm -p 4000:4000 -p 4001:4001 -p 4005:4005 -v $PWD:/usr/src/game evennia/evennia
 #
 #    (If your OS does not support $PWD, replace it with the full path to your current
 #    folder).
@@ -15,6 +15,14 @@
 #    You will end up in a shell where the `evennia` command is available. From here you
 #    can install and run the game normally. Use Ctrl-D to exit the evennia docker container.
 #
+#    You can also start evennia directly by passing arguments to the folder:
+#  
+#       docker run -it --rm -p 4000:4000 -p 4001:4001 -p 4005:4005 -v $PWD:/usr/src/game evennia/evennia evennia start -l
+#
+#    This will start Evennia running as the core process of the container. Note that you *must* use -l
+#    or one of the foreground modes (like evennia ipstart) since otherwise the container will immediately
+#    die since no foreground process keeps it up. 
+#
 # The evennia/evennia base image is found on DockerHub and can also be used
 # as a base for creating your own custom containerized Evennia game. For more
 # info, see https://github.com/evennia/evennia/wiki/Running%20Evennia%20in%20Docker .
@@ -58,7 +66,7 @@ WORKDIR /usr/src/game
 ENV PS1 "evennia|docker \w $ "
 
 # startup a shell when we start the container
-ENTRYPOINT bash -c "source /usr/src/evennia/bin/unix/evennia-docker-start.sh"
+ENTRYPOINT ["/usr/src/evennia/bin/unix/evennia-docker-start.sh"]
 
 # expose the telnet, webserver and websocket client ports
 EXPOSE 4000 4001 4005

bin/unix/evennia-docker-start.sh

@@ -1,10 +1,18 @@
-#! /bin/bash
+#! /bin/sh
 
 # called by the Dockerfile to start the server in docker mode
 
 # remove leftover .pid files (such as from when dropping the container)
 rm /usr/src/game/server/*.pid >& /dev/null || true
 
-# start evennia server; log to server.log but also output to stdout so it can 
-# be viewed with docker-compose logs
-exec 3>&1; evennia start -l
+PS1="evennia|docker \w $ "
+
+cmd="$@"
+output="Docker starting with argument '$cmd' ..."
+if test -z $cmd; then
+    cmd="bash"
+    output="No argument given, starting shell ..."
+fi
+
+echo $output
+exec 3>&1; $cmd

evennia/prototypes/spawner.py

@@ -258,7 +258,6 @@ def prototype_from_object(obj):
     aliases = obj.aliases.get(return_list=True)
     if aliases:
         prot['aliases'] = aliases
-    from evennia import set_trace;set_trace()
     tags = [(tag.db_key, tag.db_category, tag.db_data)
             for tag in obj.tags.all(return_objs=True)]
     if tags: