Python command not found on custom docker image

Build Environment
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1

Hi, i have a custom primary docker image (debian clone) wich has, next to the actual build tools, also python3 installed. I need python to run a python script after the actual build process to transform ctest report into something cricleci can understand.
But unfortunately after calling python i get a command not found error. I guess it is somehow a problem with the Dockerfile.
Dockerfile
config.yml

2

Your Dockerfile is installing Python v3 not v2. In many distros right now, Python v3 has to be called using python3 not python.

Two good solutions would be:

  1. Use python3 instead of python.
  2. Symlink python to python3 which will allow you to continue to use python in your scripts/CircleCI config though it wil use Python v3.
3

Unfortunately thats also not working. I can run python3 via build of the image
Step 8/9 : RUN python3 --version
—> Running in 2bad5f1045d2
Python 3.7.3
With config.yml I get again the error
- run: python3 --version
====>> python3 --version
#!/bin/bash -eo pipefail
python3 --version
/bin/bash: python3: command not found
Error:
Exited with code exit status 127

4

Correct. In your config, I see you are using the image “dockerben/cpptemplate:latest”. That is not currently the same image as the Dockerfile you link in your first post.

If I use dockerben/cpptemplate:latest, I get the error you’re getting. If I build the image myself from your Dockerfile and then run it, it works.

5

ok that’s weird, because i build it also from the dockerfile and pushing it up to dockerhub to dockerben/cpptemplate:latest. Is it correct how i’m doing this? I thought what is now on dockerhub is exactly the same as defined in Dockerfile.
sudo docker build -t cpptemplate .
sudo docker push dockerben/cpptemplate:latest

How are you running the config.yml with a local image?
I used sudo circleci local execute

6

Ok i found it, somehow the tag between local docker and dockerhub dockerben/cpptemplate:latest was broken. I had to delete it manualy and then reassign it. Thnx for the help.

7

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