Update support for Linux ARM on GitLab

README.md

@@ -58,7 +58,7 @@ Usage
 | Travis CI       | ✅    |       | ✅      | ✅        |           |
 | AppVeyor        | ✅    | ✅    | ✅      |           | ✅²       |
 | CircleCI        | ✅    | ✅    |         |           | ✅²       |
-| Gitlab CI       | ✅    |       |         |           |           |
+| Gitlab CI       | ✅    |       |         | ✅¹       |           |
 | Cirrus CI       | ✅    | ✅³   | ✅      | ✅        | ✅        |
 
 <sup>¹ [Requires emulation](https://cibuildwheel.readthedocs.io/en/stable/faq/#emulation), distributed separately. Other services may also support Linux ARM through emulation or third-party build hosts, but these are not tested in our CI.</sup><br>

examples/gitlab-with-qemu.yml

@@ -0,0 +1,21 @@
+linux:
+  image: python:3.8
+  # make a docker daemon available for cibuildwheel to use
+  services:
+    - name: docker:dind
+      entrypoint: ["env", "-u", "DOCKER_HOST"]
+      command: ["dockerd-entrypoint.sh"]
+  variables:
+    DOCKER_HOST: tcp://docker:2375/
+    DOCKER_DRIVER: overlay2
+    # See https://github.com/docker-library/docker/pull/166
+    DOCKER_TLS_CERTDIR: ""
+  script:
+    - curl -sSL https://get.docker.com/ | sh
+    # Warning: This is extremely slow, be careful with how many wheels you build
+    - docker run --rm --privileged multiarch/qemu-user-static --reset -p yes
+    - python -m pip install cibuildwheel==2.10.2
+    - cibuildwheel --output-dir wheelhouse
+  artifacts:
+    paths:
+      - wheelhouse/