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## Overall Docker Setup for Coq's CI.
This directory provides Docker images to be used by Coq's CI. The
images do support Docker autobuild on `hub.docker.com` and Gitlab's
private registry.
Gitlab CI will build and tag a Docker by default for every job if the
`SKIP_DOCKER` variable is not set to `false`. In Coq's CI, this
variable is usually set to `false` indeed to avoid booting a useless
job.
## Manual Building
You can also manually build and push any image:
- Build the image `docker build -t base:$VERSION .`
To upload/push to your hub:
- Create a https://hub.docker.com account.
- Login into your space `docker login --username=$USER`
- Push the image:
+ `docker tag base:$VERSION $USER/base:$VERSION`
+ `docker push $USER/base:$VERSION`
## Debugging / Misc
To open a shell inside an image do `docker run -ti --entrypoint /bin/bash <imageID>`
Each `RUN` command creates an "layer", thus a Docker build is
incremental and it always help to put things updated more often at the
end.
## Possible Improvements:
- Use ARG for customizing versions, centralize variable setup;
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