apt not found when I use apt in gitlab ci before_script

Question

I use gitlab ci to build docker image and I want to install python. When I build, the following is my gitlab-ci.yml:

image: docker:stable
stages:
  - test
  - build

before-script:
  - apt install -y python-dev python pip

test1:
  stage: test
  script:
  ...
    - pytest

build:
  stage: build
  - docker build -t $IMAGE_TAG .
  - docker push $IMAGE_TAG

but i got a Job failed

/bin/sh: eval: line : apt: not found
ERROR: Job failed: exit code 127

I also tried to apt-get install but the result is the same.

How do I install python??

score 24 · Accepted Answer · answered Mar 05 '19 at 07:24

It's actually not a problem but you can say it featured by package-manager with Alpine you are using image: docker:stable or any such images like tomcat or Django they are on Alpine Linux. with minimal in the size .

image: docker:stable
stages:
 - test
 - build

before-script:
 - apk add python python-dev python pip

test1:
stage: test
script:
...
- pytest

build:
stage: build
 - docker build -t $IMAGE_TAG .
 - docker push $IMAGE_TAG

apk is Alpine Linux package management

score 10 · Answer 2 · edited Oct 03 '19 at 09:10

10

The image that you are using docker: stable is based on Alpine Linux which uses apk as its package manager. installation with apk will look like that: apk add python

edited Oct 03 '19 at 09:10

mr_incredible

837
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answered Mar 05 '19 at 06:54

jkrol2

394
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6

score 8 · Answer 3 · edited Dec 06 '19 at 20:54

8

The error you see is because apt doesn’t exist in alpine docker.

This line solved the problem for me:

apk update && apk add python

edited Dec 06 '19 at 20:54

Igor Escodro

1,307
2
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answered Dec 06 '19 at 16:18

Shrikant Mudholkar

81
1
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apt not found when I use apt in gitlab ci before_script

3 Answers3