atuin-server: add config

roles/atuin-server/files/atuin-server.postgres.backup.sh

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+cd /etc/atuin
+
+/usr/bin/docker compose exec -T db pg_dump -U atuin atuin |
+    /usr/bin/gzip --rsyncable |
+    /usr/local/bin/restic backup --stdin --stdin-filename atuin-server-postgres.sql.gz

roles/atuin-server/files/atuin-server.service

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+[Unit]
+Description=Sync server for Atuin
+After=docker.target 
+Requires=docker.target
+
+[Service]
+Type=exec
+User=atuin
+Group=atuin
+WorkingDirectory=/etc/atuin
+ExecStart=/usr/bin/docker compose up
+ExecStop=/usr/bin/docker compose down
+
+[Install]
+WantedBy=multi-user.target

roles/atuin-server/files/compose.yml

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+# vim: ft=yaml
+version: '3'
+
+services:
+  app:
+    image: 'ghcr.io/atuinsh/atuin:18.3.0'
+    command: 'server start'
+    restart: 'always'
+
+    ports:
+      - '8009:8888'
+    volumes:
+      - '/etc/atuin/server.toml:/config/server.toml'
+
+    depends_on:
+      db:
+        condition: service_healthy
+
+  db:
+    image: 'postgres:16.4-alpine'
+    restart: 'always'
+
+    healthcheck:
+      test: ["CMD", "pg_isready", "-U", "atuin"]
+      interval: 10s
+      start_period: 30s
+
+    environment:
+      - POSTGRES_USER=atuin
+      - POSTGRES_PASSWORD=atuin
+      - POSTGRES_DB=atuin
+    volumes:
+      - 'mnt/data1/atuin-server/postgres:/var/lib/postgresql/data'

roles/atuin-server/files/server.toml

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+host = "0.0.0.0"
+port = 8888
+open_registration = true
+db_uri = "postgres://atuin:atuin@db/atuin"