Eliminate Dockerfile

Author: gjsjohnmurray

test/docker-compose.yml

@@ -13,7 +13,9 @@ services:
     volumes: 
       - ~/cache.key:/usr/cachesys/mgr/cache.key
   iris:
-    build: iris
-    init: true
+    image: intersystemsdc/iris-community:preview
     ports:
       - 52773:52773
+    command: 
+      - -a
+      - iris session iris -U %SYS '##class(Security.Users).UnExpireUserPasswords("*")'