Container image

[devurandom]

Is your feature request related to a problem? Please describe.

Downloading the Codecov CLI, e.g. using the CircleCI Orb, requires a build environment that has curl and other tools available. In addition, the rather large tool (ca. 25MB) has to be downloaded every time the build pipeline runs, which takes time and creates costs.

Describe the solution you'd like

A container image containing Codecov CLI, that is content-addressable and can be cached by the CI system.

Describe alternatives you've considered

• Include the binary in our VCS repository.
• Create a container image myself.

Additional context

Copied from codecov/uploader#744.