Vaultwarden in Docker.
Your vault, your server.

docker-compose walkthrough

The image ships a standalone docker-compose.yml:

name: vaultwarden

services:
  vaultwarden:
    image: ${VW_IMAGE:-ghcr.io/remarkablecloud/vaultwarden:1-r1}
    restart: unless-stopped
    ports: ["${HTTP_PORT:-8086}:80"]
    environment:
      DOMAIN: ${DOMAIN:-http://localhost:8086}
      SIGNUPS_ALLOWED: ${SIGNUPS_ALLOWED:-true}
    volumes:
      - vw-data:/data

volumes:
  vw-data:

Line by line:

• image pins the RemarkableCloud Vaultwarden tag, overridable with VW_IMAGE.
• restart: unless-stopped brings the container back after a crash or reboot.
• ports maps host port 8086 to container port 80. This is for standalone runs only. Behind Traefik, no port is published; the proxy routes to port 80 on the internal network.
• DOMAIN is the public URL of the server and must be exact (see the reference below).
• SIGNUPS_ALLOWED controls open registration.
• volumes mounts the vw-data volume at /data, which holds the SQLite database, attachments, RSA keys, and config.json.

Set your real URL and start it, for example DOMAIN=https://vault.example.com docker compose up -d. Open the URL, create your account, then close registration.

Environment variable reference

Variable	App Platform value	Standalone default	Notes
DOMAIN	https://your-hostname	http://localhost:8086	The exact public URL of the server. WebAuthn and two-factor authentication, attachment and Send links, and email links all depend on it being correct and using https in production.
SIGNUPS_ALLOWED	true	true	Whether new users can self-register. Set to false after you create your account.
HTTP_PORT	not applicable	8086	Host port mapped to container port 80 in standalone compose only (not published behind Traefik).
VW_IMAGE	not applicable	ghcr.io/remarkablecloud/vaultwarden:1-r1	Image reference override for standalone compose.

Hardening notes

• Close registration. The catalog ships with SIGNUPS_ALLOWED=true so you can create the first account. Set it to false immediately afterward so no one else can register. For controlled onboarding later, use Vaultwarden’s invitation flow instead of reopening sign-ups.
• Set DOMAIN correctly. WebAuthn and two-factor authentication are bound to the exact origin. Use the real public https URL, with no trailing slash and no port.
• TLS at the proxy. In production the container serves plain HTTP on port 80 and Traefik terminates TLS. Keep the container off any public port and let the proxy reach it internally. Vaultwarden should always be reached over HTTPS.
• Admin panel is off by default. Vaultwarden’s /admin panel stays disabled until you set an ADMIN_TOKEN environment variable (an upstream option). This image does not set one. If you enable it, use a long random token, ideally an Argon2 hash as documented upstream.
• Runs as root. The upstream server runs as root. Keep it isolated behind the proxy and do not publish its port.

Backup and upgrade

Backup. All state lives in the vw-data volume at /data: the SQLite database (db.sqlite3), uploaded attachments, the RSA key files, and config.json. Back up the whole volume on a schedule. The RSA key files matter: keep them, or existing sessions and some tokens are invalidated after a restore. For a consistent database copy, either stop the container briefly before copying the volume, or run the SQLite backup API against the mounted database from the host or any container that has the sqlite3 CLI (for example sqlite3 db.sqlite3 ".backup 'backup.sqlite3'"), so you never capture a database mid-write.

Upgrade. Pull the newer RemarkableCloud tag and recreate the container. The vw-data volume persists, so vaults, attachments, and keys carry over. Vaultwarden runs any needed schema migrations on start, and because it uses SQLite there is no separate database server to upgrade. Read the CHANGELOG for the target tag first, and back up the volume before upgrading.