diff --git a/apt-file/Dockerfile b/apt-file/Dockerfile
index 076c214..9dc8097 100644
--- a/apt-file/Dockerfile
+++ b/apt-file/Dockerfile
@@ -6,4 +6,4 @@ RUN apt-get update && apt-get install -y \
 	--no-install-recommends \
 	&& rm -rf /var/lib/apt/lists/*
 
-CMD [ "apt-file" ]
+CMD [ "bash" ]
diff --git a/virtualbox/Dockerfile b/virtualbox/Dockerfile
index 5d1e392..eb40013 100644
--- a/virtualbox/Dockerfile
+++ b/virtualbox/Dockerfile
@@ -21,7 +21,7 @@
 # 	docker cp virtualbox:/usr/src/vboxhost-4.3.28 /usr/src/
 #
 # then the share
-# 	cp virtualbox:/usr/share/virtualbox /usr/share
+# 	docker cp virtualbox:/usr/share/virtualbox /usr/share
 #
 # then run the script:
 # 	./vboxdrv setup
diff --git a/vlc/Dockerfile b/vlc/Dockerfile
index 388d284..4a56547 100644
--- a/vlc/Dockerfile
+++ b/vlc/Dockerfile
@@ -7,7 +7,7 @@
 #	-v /tmp/.X11-unix:/tmp/.X11-unix \
 #	-e DISPLAY=unix$DISPLAY \
 #	--name vlc \
-#	jess/vlc	 
+#	jess/vlc
 #
 FROM debian:sid
 MAINTAINER Jessica Frazelle <jess@docker.com>