Set up Docker Swarm and abra
Deploy coop-cloud/traefik
abra app new custom-html
abra app config YOURAPPDOMAIN - be sure to change $DOMAIN to something that resolves to your Docker swarm box
abra app deploy YOURAPPDOMAIN
Copy your files to the container, using something like

abra app cp YOURAPPDOMAIN index.html app:/usr/share/nginx/html

Allowing upload via SSH/SFTP

Category: Development
Status: 2, beta
Image: nginx , 4, upstream
Healthcheck: No
Backups: No
Email: N/A
Tests: 2
SSO: No

To allow management of your site's files using scp, rsync or other SSH-based tools:

If you don't already have one, generate an SSH keypair using ssh-keygen
abra app config YOURAPPDOMAIN
Uncomment these lines and add your public key:

#COMPOSE_FILE="$COMPOSE_FILE:compose.sftp.yml"
#PUBLIC_KEY="ssh-ed25519 AAAAC3NzaJ1lZDI1NTE5AAAAIXqf4nxUxuGmLOaxXXXXXXXXoM/GwhcrAgmtbgXToaYmCJ user@host" # Replace with a public key you generate

abra app undeploy YOURAPPDOMAIN
abra app deploy YOURAPPDOMAIN
Test the SSH connection: ssh -p 2220 sftp@YOURAPPDOMAIN
You can copy local files into the server's web root with a command like: scp -r -P 2220 * sftp@YOURAPPDOMAIN:/content