extend the boot2docker manage script to set up the DOCKER_HOST env

[SvenDowideit]

somewhat inspired by https://coderwall.com/p/r6ivdq

ie, ./boot2docker build would pass through to the vm - and start it if needed..

which makes me think the scriptname is too long :)

[steeve]

+1 for the script name length. @shykes has an idea about that :)

[steeve]

however, i'm not really in favor of having a wrapper script really 👎
because then we create non compatible command lines

[bfirsh]

👎 a wrapper script. Loads of discussion about this here: julien-duponchelle/docker-osx#25

Though setting DOCKER_HOST is a good idea. With docker-osx, you run docker-osx shell it opens a new shell with DOCKER_HOST set. I'm not sure I like this though – I keep on forgetting to open a shell. It either needs to make it really clear that it is a magical Docker shell, or maybe it could set the env var automatically with launchd or something like that.

I wonder how other OS X tools handle stuff like this? Does homebrew set env vars I wonder?

[SvenDowideit]

mmm, I wonder if a trivial solution to this, is to have boot2docker start export DOCKER_HOST=tcp://:$DOCKER_PORT.

oh, and have boot2docker init think about downloading the docker client if its not already on your system.

super magical :)

[moul]

The boot2docker start export DOCKER_HOST=tcp://:$DOCKER_PORT, won't stay after the end of the script, so we need to store it

Another solution is to use socat, this is working but need sudo

# sudo socat UNIX-LISTEN:/var/run/docker.sock,reuseaddr,fork,mode=777 TCP-CONNECT:boot2docker:4243
# unset DOCKER_HOST
# docker ps
CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS               NAMES
...

👍 boot2docker init downloading the docker client is a good idea :)

[aheissenberger]

if boot2docker cmd is used as a wrapper it can export the variable vor each call to docker - e.g. :
boot2docker cmd version

to get a shorter command people can use alias

[steeve]

I guess we're going to have to rename the boot2docker script to something shorter then.

[aheissenberger]

I would only add a hint to the README FAQ part that everyone is free to shorten the call by adding alias b2dc='boot2docker cmd' to their bash setup config

[aheissenberger]

I also like the way brew suggest some todos after a successful install - e.g. adding export DOCKER_HOST=tcp://:locahost to the bash config

[SvenDowideit]

The OSX installer has a magic icon that starts everything and sets the env. More work is ongoing in http://github.com/boot2docker/boot2docker-cli