Docker Alpine Linux python (missing)

user_3123404 0
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I have a pipeline which deploys my container from GitLab. Last deployment was 5 days ago and went without any problems. Today I deploy it and get the following error:

$ apk add --no-cache curl python py-pip
 fetch http://dl-cdn.alpinelinux.org/alpine/v3.12/main/x86_64/APKINDEX.tar.gz
 fetch http://dl-cdn.alpinelinux.org/alpine/v3.12/community/x86_64/APKINDEX.tar.gz
 ERROR: unsatisfiable constraints:
   python (missing):
     required by: world[python]

My job definition is:

my-deploy:
  type: my-deploy
  image: docker:stable
  script:
    - apk update
    - apk add --no-cache curl python py-pip <-- Here the erorr happens
    ...
alpine-linux docker
5 Answers

From this issue on the Docker's repo:

This was "broken" while updating our base from alpine:3.11 to alpine:3.12.

In order to fix it you need to specify the version of Python directly, e.g.:

apk add python2
// or
apk add python3
user_31234040

Try this command:

apk add --update --no-cache curl py-pip

It will install python3 automatically with pip.

My understanding is that Python 2 has been decommissioned from the latest Alpine packages.

user_4982560
user_104307280

For future readers:

I got a similar error with node:14-alpine

ERROR: unable to select packages:  
  python2 (no such package):  
    required by: world[python2]

But I couldn't use the other answers listed in this question because I needed exactly python2 and running apk add python2 was giving me the error above.

After a while I realized that in the latest alpine version, there's only python3 (there's no python2).

So the solution was to use an older version of alpine that have python2 (alpine v3.15).

So the fix was changing node:14-alpine to node:14-alpine3.15

I know this isn't the exact same error, but while trying to find an answer for my error, I always ended up here, so I'm leaving this for future readers that might have the same problem.

user_91191860

What solved it for me is this solution posted on GitHub.

RUN echo -e "http://nl.alpinelinux.org/alpine/v3.5/main\nhttp://nl.alpinelinux.org/alpine/v3.5/community" > /etc/apk/repositories
user_4536730
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