initial commit

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

roles/docker/handlers/main.yml

@@ -0,0 +1,6 @@
+---
+- name: restart docker
+  systemd:
+    name: docker
+    state: restarted
+

roles/docker/tasks/main.yml

@@ -0,0 +1,76 @@
+---
+- name: Install prerequisite packages
+  apt:
+    name:
+      - ca-certificates
+      - curl
+      - gnupg
+      - lsb-release
+    state: present
+    update_cache: true
+
+- name: Add Docker GPG key
+  apt_key:
+    url: https://download.docker.com/linux/ubuntu/gpg
+    state: present
+
+- name: Add Docker apt repository
+  apt_repository:
+    repo: >
+      deb [arch=amd64]
+      https://download.docker.com/linux/ubuntu
+      {{ ansible_facts['distribution_release'] }} stable
+    state: present
+    filename: docker
+
+- name: Install Docker engine and compose plugin
+  apt:
+    name:
+      - docker-ce
+      - docker-ce-cli
+      - containerd.io
+      - docker-buildx-plugin
+      - docker-compose-plugin
+    state: present
+    update_cache: true
+
+- name: Enable and start Docker
+  systemd:
+    name: docker
+    enabled: true
+    state: started
+
+- name: Ensure Docker config directory
+  file:
+    path: /etc/docker
+    state: directory
+    mode: '0755'
+
+- name: Configure Docker to use journald
+  copy:
+    dest: /etc/docker/daemon.json
+    content: |
+      {
+        "log-driver": "journald"
+      }
+    mode: '0644'
+  notify: restart docker
+
+- name: Add admin user to docker group
+  user:
+    name: "{{ admin_user }}"
+    groups: docker
+    append: true
+
+# ---- Filesystem layout ----
+
+- name: Create base directory
+  file:
+    path: "{{ item }}"
+    state: directory
+    owner: root
+    group: root
+    mode: "0755"
+  loop:
+    - /srv
+