Merge pull request #4108 from unclejack/remove_default_tcp_bind_address

disallow tcp:// from defaulting to 127.0.0.1:4243

docs/sources/installation/mac.rst

@@ -72,7 +72,7 @@ Run the following commands to get it downloaded and set up:
     chmod +x docker
 
     # Set the environment variable for the docker daemon
-    export DOCKER_HOST=tcp://
+    export DOCKER_HOST=tcp://127.0.0.1:4243
 
     # Copy the executable file
     sudo cp docker /usr/local/bin/

docs/sources/reference/commandline/cli.rst

@@ -12,7 +12,7 @@ To list available commands, either run ``docker`` with no parameters or execute
 
   $ sudo docker
     Usage: docker [OPTIONS] COMMAND [arg...]
-      -H=[unix:///var/run/docker.sock]: tcp://[host[:port]] to bind/connect to or unix://[/path/to/socket] to use. When host=[0.0.0.0], port=[4243] or path=[/var/run/docker.sock] is omitted, default values are used.
+      -H=[unix:///var/run/docker.sock]: tcp://[host]:port to bind/connect to or unix://[/path/to/socket] to use. When host=[127.0.0.1] is omitted for tcp or path=[/var/run/docker.sock] is omitted for unix sockets, default values are used.
 
     A self-sufficient runtime for linux containers.