Docker Alpine Linux python (missing)

Question

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
    ...

score 86 · Accepted Answer · edited Dec 05 '21 at 16:39

86

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

edited Dec 05 '21 at 16:39

answered Jun 30 '20 at 07:51

AGoranov

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I am using docker windows desktop application. I received this error on getting-started repo. Come on! getting-started has issue? I updated the DockerFile `RUN apk add --no-cache python g++ make` with `RUN apk add --no-cache python3 g++ make`. This fixed the issue. Thanks. – Muneeb Mirza Nov 11 '21 at 06:18
1

I was able to install python2 on `ruby:2.7.6-alpine3.14` but not `ruby:2.7.6-alpine3.15` – littleforest Jun 08 '22 at 22:46

score 72 · Answer 2 · edited Dec 05 '21 at 16:38

72

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.

edited Dec 05 '21 at 16:38

answered Jun 03 '20 at 09:37

BMW

42,880
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[Sunsetting Python 2](https://www.python.org/doc/sunset-python-2/) – CreatordotJS Jun 04 '20 at 04:41
i dont think we need curl here – Sanket Berde Jun 04 '20 at 11:42
`curl` was in the question, so I think he included it to match that – slajma Aug 06 '20 at 12:00
Thanks, python2 was no longer working for me but with py-pip it worked fine. – Bram Jun 09 '22 at 10:46

score 17 · Answer 3 · answered Jul 26 '22 at 14:48

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.

I m getting the same error in the pipelne. I m using `image: node:16.15-alpine` . But based on the Alpine page that you posted above, if i use `node:16.15-alpine:3.15` is it going to pass ? — Theo Itzaris, Jan 18 '23 at 17:06
I kept the same nodejs image, i mention above, and i upgraded to `python3`. This is the affected line: `apk --update add make g++ npm autoconf zlib-dev automake file nasm python3 git py-pipq` — Theo Itzaris, Feb 22 '23 at 14:37

score 5 · Answer 4 · answered Jun 04 '20 at 10:25

5

I've fix following this https://gitlab.alpinelinux.org/alpine/aports/-/issues/11605

Updating your code to install python3:

before_script:
- apk add --update --no-cache curl jq py3-configobj py3-pip py3-setuptools python3 python3-dev

answered Jun 04 '20 at 10:25

Nícolas Sims Botelho

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score 3 · Answer 5 · answered Oct 26 '21 at 05:12

3

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

answered Oct 26 '21 at 05:12

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Docker Alpine Linux python (missing)

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