A tool to help you populate your config.json
with the Portainer API Authorization header.
$ docker run --rm -v ~/.docker/config.json:/config.json portainer/authenticator PORTAINER_URL:9443 username password true
$ docker -H PORTAINER_URL:9000/api/endpoints/1/docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
04e273b9cb27 portainer/base "/app/portainer --no…" 5 minutes ago Up 5 minutes 0.0.0.0:9000->9000/tcp portainer
...