Add infra setup: Terraform for DO droplet + Cloudflare DNS, Ansible roles for Gitea, Vaultwarden, and Gitea runner

infra/ansible/roles/vaultwarden/templates/docker-compose.yml.j2

@@ -0,0 +1,16 @@
+services:
+  vaultwarden:
+    image: vaultwarden/server:latest
+    container_name: vaultwarden
+    restart: unless-stopped
+    volumes:
+      - {{ vaultwarden_data_dir }}/data:/data
+    environment:
+      DOMAIN: "https://{{ vaultwarden_domain }}"
+      SIGNUPS_ALLOWED: "{{ vaultwarden_signups_allowed }}"
+      ADMIN_TOKEN: "{{ vaultwarden_admin_token }}"
+{% if vaultwarden_database_url %}
+      DATABASE_URL: "{{ vaultwarden_database_url }}"
+{% endif %}
+    ports:
+      - "127.0.0.1:{{ vaultwarden_port }}:80"