Error: URL in config must be provided with protocol

Developer help Self-hosting
1

I’m trying to spin up Ghost in a Docker container that is proxied through a Cloudflare tunnel (also via Docker) instead of something like Nginx, Caddy, etc.

To start, I created the ‘cloudflared’ tunnel container and configured the DNS record for my domain to point to the tunnel ID.

However, when I try to create the Ghost container via docker-compose using https://mydomain.st as the URL variable, I receive the following error:

Error: URL in config must be provided with protocol, eg. "http://my-ghost-blog.com"

My site should be configured for SSL given it’s connected to a Cloudflare tunnel, so I’m not sure why I might be running into this issue.

I’ve tried changing the URL variable to http://mydomain.st but receive the same error.

Any thoughts?

2

Maybe there’s an indenting problem in your docker-compose.yml file. Post your docker-compose.yml file, anonymizing the contents if needed.

3

I was able to solve my problem. I was using hyphens in the variables I was declaring in my .env file, which docker-compose apparently doesn’t allow.

Replacing them with underscores seems to have done the trick!

4

That’s not just Docker Compose, but environment variables in general.

Usually they contain only letters, numbers and the underscore, and have to start with a letter.

Ref: syntax - Allowed characters in Linux environment variable names - Stack Overflow