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

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

@@ -0,0 +1,19 @@
+services:
+  gitea:
+    image: gitea/gitea:{{ gitea_version }}
+    container_name: gitea
+    restart: unless-stopped
+    volumes:
+      - {{ gitea_data_dir }}/data:/data
+    environment:
+      USER_UID: 1000
+      USER_GID: 1000
+      GITEA__server__DOMAIN: "{{ gitea_domain }}"
+      GITEA__server__ROOT_URL: "https://{{ gitea_domain }}/"
+      GITEA__server__HTTP_PORT: 3000
+      GITEA__server__SSH_DOMAIN: "{{ gitea_domain }}"
+      GITEA__server__SSH_PORT: "{{ gitea_ssh_port }}"
+      GITEA__server__START_SSH_SERVER: "true"
+    ports:
+      - "127.0.0.1:{{ gitea_http_port }}:3000"
+      - "{{ gitea_ssh_port }}:22"

infra/ansible/roles/gitea/templates/nginx.conf.j2

@@ -0,0 +1,24 @@
+server {
+    listen 80;
+    server_name {{ gitea_domain }};
+    return 301 https://$host$request_uri;
+}
+
+server {
+    listen 443 ssl;
+    server_name {{ gitea_domain }};
+
+    ssl_certificate     /etc/nginx/ssl/cf-origin.pem;
+    ssl_certificate_key /etc/nginx/ssl/cf-origin.key;
+
+    ssl_protocols       TLSv1.2 TLSv1.3;
+    ssl_ciphers         HIGH:!aNULL:!MD5;
+
+    location / {
+        proxy_pass         http://127.0.0.1:{{ gitea_http_port }};
+        proxy_set_header   Host              $host;
+        proxy_set_header   X-Real-IP         $remote_addr;
+        proxy_set_header   X-Forwarded-For   $proxy_add_x_forwarded_for;
+        proxy_set_header   X-Forwarded-Proto $scheme;
+    }
+}