Initial minecraft role

Paper/Java via itzg/minecraft-server in docker compose; whitelist and ops synchronized from Ansible, RCON on localhost only, explicit EULA flag.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

tasks/main.yml

@@ -0,0 +1,48 @@
+---
+- name: check minecraft eula acceptance
+  assert:
+    that: minecraft_eula | bool
+    fail_msg: "Set minecraft_eula: true to accept the Minecraft EULA (https://aka.ms/MinecraftEULA)."
+
+- name: setup minecraft directories
+  file:
+    state: directory
+    path: "{{ item }}"
+    owner: root
+    group: root
+    mode: 0750
+  loop:
+    - "{{ minecraft_dir }}"
+    - "{{ minecraft_inst }}"
+
+# the container runs as uid/gid 1000
+- name: setup minecraft data directory
+  file:
+    state: directory
+    path: "{{ minecraft_data_location }}"
+    owner: "1000"
+    group: "1000"
+    mode: 0750
+
+- name: template minecraft compose file
+  template:
+    src: opt/minecraft/docker-compose.yml.j2
+    dest: "{{ minecraft_inst }}/docker-compose.yml"
+    mode: 0644
+    owner: root
+    group: root
+  notify: restart minecraft
+
+- name: template minecraft environment
+  template:
+    src: opt/minecraft/.env.j2
+    dest: "{{ minecraft_inst }}/.env"
+    mode: 0640
+    owner: root
+    group: root
+  notify: restart minecraft
+
+- name: start minecraft
+  community.docker.docker_compose_v2:
+    project_src: "{{ minecraft_inst }}"
+    state: present