@rdfm wrote in https://forge.sourceware.org/gcc/gcc-TEST/pulls/116#issuecomment-4545:
> Hi @pietro, could you create a PR, adding the contents of the Dockerfile > you're using as contrib/ci-container/essential/Containerfile please? Thanks! [#132](https://forge.sourceware.org/gcc/gcc-TEST/pulls/132) -- https://forge.sourceware.org/gcc/gcc-TEST/pulls/116#issuecomment-4571
