How can I get /etc/profile
to run automatically when starting an Alpine Docker container interactively? I have added some aliases to an aliases.sh
file and placed it in /etc/profile.d
, but when I start the container using docker run -it [my_container] sh
, my aliases aren't active. I have to manually type . /etc/profile
from the command line each time.
Is there some other configuration necessary to get /etc/profile
to run at login? I've also had problems with using a ~/.profile
file. Any insight is appreciated!
EDIT:
Based on VonC's answer, I pulled and ran his example ruby
container. Here is what I got:
$ docker run --rm --name ruby -it codeclimate/alpine-ruby:b42 / # more /etc/profile.d/rubygems.sh export PATH=$PATH:/usr/lib/ruby/gems/2.0.0/bin / # env no_proxy=*.local, 169.254/16 HOSTNAME=6c7e93ebc5a1 SHLVL=1 HOME=/root TERM=xterm PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin PWD=/ / # exit
Although the /etc/profile.d/rubygems.sh
file exists, it is not being run when I login and my PATH
environment variable is not being updated. Am I using the wrong docker run
command? Is something else missing? Has anyone gotten ~/.profile
or /etc/profile.d/
files to work with Alpine on Docker? Thanks!
docker exec -it 5f4 sh / # (<-- you can run linux command here!) type exit to come out- You can run it in detached mode and it will keep running. You will need to STOP otherwise it will keep running. Show activity on this post.
Alpine Linux is a super lightweight Linux distribution that's useful for Docker containers. In this Docker and Alpine Linux tutorial, we'll build an Nginx web server that demonstrates how small a Docker container image can be.
The default shell in Alpine Linux is ash
.
Ash will only read the /etc/profile
and ~/.profile
files if it is started as a login shell sh -l
.
To force Ash to source the /etc/profile
or any other script you want upon its invocation as a non login shell, you need to setup an environment variable called ENV
before launching Ash.
e.g. in your Dockerfile
FROM alpine:3.5 ENV ENV="/root/.ashrc" RUN echo "echo 'Hello, world!'" > "$ENV"
When you build that you get:
deployer@ubuntu-1604-amd64:~/blah$ docker build --tag test . Sending build context to Docker daemon 2.048kB Step 1/3 : FROM alpine:3.5 3.5: Pulling from library/alpine 627beaf3eaaf: Pull complete Digest: sha256:58e1a1bb75db1b5a24a462dd5e2915277ea06438c3f105138f97eb53149673c4 Status: Downloaded newer image for alpine:3.5 ---> 4a415e366388 Step 2/3 : ENV ENV "/root/.ashrc" ---> Running in a9b6ff7303c2 ---> 8d4af0b7839d Removing intermediate container a9b6ff7303c2 Step 3/3 : RUN echo "echo 'Hello, world!'" > "$ENV" ---> Running in 57c2fd3353f3 ---> 2cee6e034546 Removing intermediate container 57c2fd3353f3 Successfully built 2cee6e034546
Finally, when you run the newly generated container, you get:
deployer@ubuntu-1604-amd64:~/blah$ docker run -ti test /bin/sh Hello, world! / # exit
Notice the Ash shell didn't run as a login shell.
So to answer your query, replace
ENV ENV="/root/.ashrc"
with:
ENV ENV="/etc/profile"
and Alpine Linux's Ash shell will automatically source the /etc/profile script each time the shell is launched.
Gotcha: /etc/profile is normally meant to only be sourced once! So, I would advise that you don't source it and instead source a /root/.somercfile instead.
Source: https://stackoverflow.com/a/40538356
You still can try in your Dockerfile a:
RUN echo '\ . /etc/profile ; \ ' >> /root/.profile
(assuming the current user is root
. If not, replace /root
with the full home path)
That being said, those /etc/profile.d/xx.sh should run.
See codeclimate/docker-alpine-ruby
as an example:
COPY files /
With 'files/etc
" including an files/etc/profile.d/rubygems.sh
running just fine.
In the OP project Dockerfile
, there is a
COPY aliases.sh /etc/profile.d/
But the default shell is not a login shell (sh -l), which means profile
files (or those in /etc/profile.d
) are not sourced.
Adding sh -l
would work:
docker@default:~$ docker run --rm --name ruby -it codeclimate/alpine-ruby:b42 sh -l 87a58e26b744:/# echo $PATH /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/lib/ruby/gems/2.0.0/bin
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