Using the RUN instruction in a Dockerfile with 'source' does not work
I have a Dockerfile that I am putting together to install a vanilla python environment (into which I will be installing an app, but at a later date).
FROM ubuntu:12.04 # required to build certain python libraries RUN apt-get install python-dev -y # install pip - canonical installation instructions from pip-installer.org # http://www.pip-installer.org/en/latest/installing.html ADD https://bitbucket.org/pypa/setuptools/raw/bootstrap/ez_setup.py /tmp/ez_setup.py ADD https://raw.github.com/pypa/pip/master/contrib/get-pip.py /tmp/get-pip.py RUN python /tmp/ez_setup.py RUN python /tmp/get-pip.py RUN pip install --upgrade pip # install and configure virtualenv RUN pip install virtualenv RUN pip install virtualenvwrapper ENV WORKON_HOME ~/.virtualenvs RUN mkdir -p $WORKON_HOME RUN source /usr/local/bin/virtualenvwrapper.sh
The build runs ok until the last line, where I get the following exception:
[previous steps 1-9 removed for clarity] ... Successfully installed virtualenvwrapper virtualenv-clone stevedore Cleaning up... ---> 1fc253a8f860 Step 10 : ENV WORKON_HOME ~/.virtualenvs ---> Running in 8b0145d2c80d ---> 0f91a5d96013 Step 11 : RUN mkdir -p $WORKON_HOME ---> Running in 9d2552712ddf ---> 3a87364c7b45 Step 12 : RUN source /usr/local/bin/virtualenvwrapper.sh ---> Running in c13a187261ec /bin/sh: 1: source: not found
ls into that directory (just to test that the previous steps were committed) I can see that the files exist as expected:
$ docker run 3a87 ls /usr/local/bin easy_install easy_install-2.7 pip pip-2.7 virtualenv virtualenv-2.7 virtualenv-clone virtualenvwrapper.sh virtualenvwrapper_lazy.sh
If I try just running the
source command I get the same 'not found' error as above. If I RUN an interactive shell session however, source does work:
$ docker run 3a87 bash source bash: line 1: source: filename argument required source: usage: source filename [arguments]
I can run the script from here, and then happily access
I've done some digging, and initially it looked as if the problem might lie in the difference between bash as the Ubuntu login shell, and dash as the Ubuntu system shell, dash not supporting the
However, the answer to this appears to be to use '.' instead of
source, but this just causes the Docker runtime to blow up with a go panic exception.
What is the best way to run a shell script from a Dockerfile RUN instruction to get around this (am running off the default base image for Ubuntu 12.04 LTS).
RUN /bin/bash -c "source /usr/local/bin/virtualenvwrapper.sh"