https://github.com/dani-garcia/vaultwarden

Basic run command:- 
docker run -d --name vaultwarden -v /vw-data/:/data/ --restart unless-stopped -p 80:80 vaultwarden/server:latest

with email support:-
https://github.com/dani-garcia/vaultwarden/wiki/SMTP-Configuration

docker run -d --name vaultwarden \
  -e SMTP_HOST=mail.lauriesummers.co.uk \
  -e SMTP_FROM=laurie3@lauriesummers.co.uk \
  -e SMTP_PORT=587 \
  -e SMTP_SECURITY=off \
  -e SMTP_USERNAME=laurie3.lauriesummers \
  -e SMTP_PASSWORD=2hillview2018! \
  -e ADMIN_TOKEN='B6%ey8xd@vB!hD' \
  -v /home/pi/Docker/vaultwarden/vw-data/:/data/ \
  -p 83:80 \
  --dns 1.1.1.1 \
  vaultwarden/server:latest
    
I had to set SMTP_SECURITY=off to get this to work and also use dns.

ADMIN_TOKEN can be set if you need to access the admin panel as per this link.
https://github.com/dani-garcia/vaultwarden/wiki/Enabling-admin-page
I have enabled to changed from localhost but then re-ran container without token.
    
    
    
TWO-STEP LOGIN Recovery code
×
Your Bitwarden two-step login recovery code for Volution vault:
2NZS 6K2S EV2M VG56 6PE4 K5ZL Z5DF ONSS