Starting Hasura GraphQL engine Docker image - docker

Question

I'm trying to get started with Hasura GraphQL engine running locally on OSX in Docker and connecting to an existing database but I am having trouble finding the container or the Hasura console.
Here's what I have:
docker -v
Docker version 19.03.5, build 633a0ea
docker-compose -v
docker-compose version 1.25.4, build 8d51620a
docker images
hasura/graphql-engine v1.0.0
hasura version
INFO hasura cli version=v1.0.0
Here's my start script (docker-run.sh) which sets up the port and environment variables for Hasura:
#!/bin/bash
docker run -d -p 8080:8080 \
-e HASURA_GRAPHQL_DATABASE_URL=postgres://someuser:somepassword#host.docker.internal:5432/somedb \
-e HASURA_GRAPHQL_ENABLE_CONSOLE=true \
hasura/graphql-engine:latest
Running ./docker-run.sh returns a 64 char hex string, which I assume to be the container ID, but I cannot see a container when I run docker ps, and nothing loads on http://localhost:8080/console.
What am I missing?
UPDATE 1
I can see the container when I run docker ps -a - it has a status of exited(1) (which means application error).
I can see in the logs:
{"path":"$","error":"pgcrypto extension is required, but the current user doesn’t have permission to create it. Please grant superuser permission, or setup the initial schema via https://docs.hasura.io/1.0/graphql/manual/deployment/postgres-permissions.html","code":"postgres-error"}
I have followed the instructions for setting up the initial schema but the result of running ./docker-run.sh has not changed.
UPDATE 2
I did not realise that the pgcrypto extension had to be installed on the specific database. Now that I have done so, the logs look healthy - although I am still unable to access the console when I run hasura console.
Here's my config.yaml:
endpoint: http:localhost:8080
...and the resulting error:
FATA[0001] version check: failed to get version from server: failed making version api call: Get http:localhost:8080/v1/version: http: no Host in request URL
Again, what am I missing?
UPDATE 3
Changed config.yaml...
endpoint: http://localhost:8080
Whoops (blush).
OK, it's working :)