use mounted volume as entrypoint in docker-compose?

I have a go project (in the directory cmd) that I'm spinning up through docker-compose:

version: "3"
services:
  my-image:
    build:
      context: .
    image: my_image
    volumes:
      - cmd:/cmd
    depends_on:
      - deps
    ports:
      - 8080:8080
    entrypoint: ["go", "run", "./cmd/main.go"]

However, I keep getting this message:

 stat ./cmd/main.go: no such file or directory

is there a way I can mount the cmd directory as a volume and use a file in that as the entrypoint?

Firstly, a number of things:

• don't use go run (it's meant for the most trivial of use cases and will burn you later) - use go build always
• go build your go binary into a docker image - there's plenty of resources on how to do this
• update your docker-compose.yaml to reference this precompiled image

Back to your mount issue: if you want your containers - especially in docker compose - to mount local mounts, use fully qualified paths:

volumes:
  - /Users/me/some/path/cmd:/cmd

this will ensure the compose can be run from anywhere - and there's no confusion as to where the local mount is.