"See this docker container? I wish I could run another one just like it,
but I'll be damned if I'm going to type all those command-line switches manually!"
This is what runlike
does. You give it a docker container, it outputs the command line necessary to run another one just like it, including the arguments that went while creating it. It's a real time saver for those that normally deploy their docker containers via some CM tool like Ansible/Chef and then find themselves needing to manually re-run some container.
runlike <container-name>
This prints out what you need to run to get a similar container. You can do $(runlike container-name)
to simply execute its output in one step.
-p
breaks the command line down to nice, pretty lines. For example:
$ runlike -p redis
docker run \
--name=redis \
-e "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin" \
-e "REDIS_VERSION=2.8.9" \
-e "REDIS_DOWNLOAD_URL=http://download.redis.io/releases/redis-2.8.9.tar.gz" \
-e "REDIS_DOWNLOAD_SHA1=003ccdc175816e0a751919cf508f1318e54aac1e" \
-p 0.0.0.0:6379:6379/tcp \
--detach=true \
myrepo/redis:7860c450dbee9878d5215595b390b9be8fa94c89 \
redis-server --slaveof 172.31.17.84 6379
Feeding it the output of docker inspect
also works:
docker inspect <container-name> | runlike --stdin
--no-name
will omit the container name from the output (to avoid collisions).
This is very much a work in progress. Many docker run
options aren't yet supported, but the most commonly used ones are. Feel free to send pull requests if you add any or if you happen to fix any (of the many) bugs this package undoubtedly has.
Probably shouldn't use this in production yet. If you do, double check that it's actually running what you want it to run.
--cpuset-cpus string CPUs in which to allow execution
(0-3, 0,1)
--cpuset-mems string MEMs in which to allow execution
-d, --detach Run container in background and
print container ID
-h, --hostname string Container host name
--mac-address string Container MAC address (e.g.,
92:d0:c6:0a:29:33)
-m, --memory bytes Memory limit
--name string Assign a name to the container
--network string Connect a container to a network
(default "default")
--pid string PID namespace to use
--privileged Give extended privileges to this
container
--runtime string Runtime to use for this container
-u, --user string Username or UID (format:
<name|uid>[:<group|gid>])
Pretty much everything else. But work is in progress.
- Support more flags
- Installation instructions
- Setup CI and release binaries
- Run without installation
The work here is based on Assaf Lavie's runlike. I was lazy so the README is mostly a ripoff too. It's still a work in progress, and most features aren't yet supported. But we'll get there, sooner than later.