Add my docker and docker_compose role

Do this in preparation for the keycloak deployment.

playbooks/roles/docker/tasks/main/01_repo_setup.yaml

@@ -0,0 +1,15 @@
+- name: make sure Dockers GPG key is added
+  ansible.builtin.get_url:
+    url: https://download.docker.com/linux/debian/gpg
+    dest: /etc/apt/trusted.gpg.d/docker.asc
+    mode: "0644"
+    owner: root
+    group: root
+  become: true
+
+- name: make sure Dockers APT repository is added
+  ansible.builtin.apt_repository:
+    repo: deb [arch=amd64 signed-by=/etc/apt/trusted.gpg.d/docker.asc] https://download.docker.com/linux/debian bullseye stable
+    filename: docker
+    state: present
+  become: true