CI: test Docker installation and Ansible role usage once again

[frdmn]

Currently disabled because I couldn't get Docker setup working on the macos GitHub Actions infrastructure...

dotfiles/.github/workflows/ci.yml

Lines 62 to 63 in 3593840

	- name: Remove Docker from brew role defaults
	run: sed -ie '/docker/d' ./roles/brew/defaults/main.yml

dotfiles/.github/workflows/ci.yml

Line 69 in 3593840

run: ansible-playbook dotfiles.yml --skip-tags "mas,docker" --syntax-check

dotfiles/.github/workflows/ci.yml

Line 72 in 3593840

run: ansible-playbook dotfiles.yml --skip-tags "mas,docker"

dotfiles/.github/workflows/ci.yml

Line 79 in 3593840

ansible-playbook dotfiles.yml --skip-tags "mas,docker" | tee -a ${idempotence}