This directory includes scripts and tools for setting up Flutter's continuous integration environments.
Flutter's Linux tasks run on a custom Docker image. The
Dockerfile for this image can be found at /dev/ci/docker_linux/Dockerfile.
On each new change to this
Dockerfile, Cirrus will build a
new version of the Docker image as a dependency to any Linux tests. It
is no longer necessary to manually build and push the Docker image
NOTE: there are some factors external to the actual
Dockerfile that would necessitate rebuilding the Docker
image, such as upstream code changes, (Linux distribution) repository
updates or a file that gets
COPYied into the image
changing. In this case, a trivial
Dockerfile change (such
as a comment) would invalidate the cache and trigger a rebuild.