nvim-dap + debug golang delve + docker compose

dap.lua

local dap = {
  adapters = {
    go = {
      type = "server",
      port = 9004,
    }
  },
  configurations = {
    go = {
      {
         type = "go",
         name = "delve container debug",
         request = "attach",
         mode = "remote",
         substitutepath = {{
           from = "${workspaceFolder}",
           to = "/opt/app",
         }},   
      }
    },
  }
}

docker-compose.yaml

services:
  debug:
    build:
      context: .
      dockerfile: ./docker/go-delve.Dockerfile
    entrypoint: dlv
    working_dir: /opt/app
    restart: unless-stopped
    ports:
      - 9004:9004
    command:
      - "debug"
      - "--headless"
      - "--listen=:9004"
      - "--api-version=2"
      - "--accept-multiclient"
      - "--log"
      #- "--log-output=debugger,rpc,dap"
      - "./cmd/myapp"
      - "--"
      - "-c" # myapp arguments
      - "./config.yaml"
    volumes:
      - ./:/opt/app

go-delve.Dockerfile

FROM golang:1.20
RUN go install github.com/go-delve/delve/cmd/dlv@latest
ENTRYPOINT /go/bin/dlv