Unable to run the action inside docker

[sergepetrenko]

I have a job set up as follows (github public runner):

    runs-on: ubuntu-20.04

And then a step (you may take a look at the workflow file here ):

      - name: Install tarantool ${{ matrix.tarantool }}
        if: startsWith(matrix.tarantool, 'release') != true
        uses: tarantool/setup-tarantool@v2
        with:
          tarantool-version: ${{ matrix.tarantool }}

The workflow passes fine, but if I change runs-on to:

    runs-on: ubuntu-20.04-self-hosted                                            
    container:                                                                   
      image: docker.io/tarantool/testing:ubuntu-focal

or

    runs-on: ubuntu-20.04-self-hosted                                            
    container:                                                                   
      image: ubuntu:20.04

The job starts failing like this:

Caching APT packages: build-essential, cmake, cmake-data, dpkg-dev, fakeroot, g++, g++-9, libalgorithm-diff-perl, libalgorithm-diff-xs-perl, libalgorithm-merge-perl, libarchive13:amd64, libcurl4:amd64, libdpkg-perl, libfakeroot:amd64, libfile-fcntllock-perl, libicu66:amd64, libjsoncpp1:amd64, liblocale-gettext-perl, librhash0:amd64, libstdc++-9-dev:amd64, libunwind8:amd64, libuv1:amd64, libxml2:amd64, make, tarantool, tarantool-common, tarantool-dev
Error: ENOENT: no such file or directory, stat '/usr/share/doc/build-essential/AUTHORS'

The problem is described in #41 (comment) and should be fixed by #41