Use ubuntu image for dist stage

.gitlab-ci.yml

@@ -6,7 +6,7 @@ stages:
 
 sdist:
  stage: dist
- image: python:alpine
+ image: python:3
  script:
  - cp CMakeLists.txt.faiss faiss/CMakeLists.txt
  - python setup.py sdist
@@ -16,9 +16,9 @@ sdist:
 
 py35-wheel:
  stage: dist
- image: python:3.5-alpine
+ image: python:3.5
  script:
- - apk update && apk add g++ make cmake swig openblas-dev
+ - apt update && apt install g++ make cmake swig openblas-dev
  - pip install --upgrade pip setuptools wheel
  - cp CMakeLists.txt.faiss faiss/CMakeLists.txt
  - python setup.py bdist_wheel
@@ -28,9 +28,9 @@ py35-wheel:
 
 py36-wheel:
  stage: dist
- image: python:3.6-alpine
+ image: python:3.6
  script:
- - apk update && apk add g++ make cmake swig openblas-dev
+ - apt update && apt install g++ make cmake swig openblas-dev
  - pip install --upgrade pip setuptools wheel
  - cp CMakeLists.txt.faiss faiss/CMakeLists.txt
  - python setup.py bdist_wheel
@@ -40,9 +40,9 @@ py36-wheel:
 
 py37-wheel:
  stage: dist
- image: python:3.7-alpine
+ image: python:3.7
  script:
- - apk update && apk add g++ make cmake swig openblas-dev
+ - apt update && apt install g++ make cmake swig openblas-dev
  - pip install --upgrade pip setuptools wheel
  - cp CMakeLists.txt.faiss faiss/CMakeLists.txt
  - python setup.py bdist_wheel