I’ve 3 app in a single repo. For a project it’s Api, Admin UI & Front-end. In all of those I’m facing the issue that the source code is not getting updated correctly. Following is the Dockerfile for Api

FROM golang:1.22.5-alpine3.20

WORKDIR /usr/src/app

COPY go.mod go.sum ./
RUN go mod download && go mod verify

COPY . .
RUN go build -v -o /usr/local/bin/app ./

EXPOSE 3000

CMD ["app"]

Following is docker-compose.yaml

services:
  db:
    image: mariadb:10.5.25
    restart: always
    # ...
  adminer:
    image: adminer
    restart: always
    # ...
  API: # Our focus is in here
    container_name: bjm_api
    build: ./api
    ports:
      - "3000:3000"
    develop:
      watch:
        - action: sync
          path: ./api
          target: /usr/src/app
    networks:
      - bjm_net
    volumes:
      - api_data_bjm:/app/logs
    env_file: ./api/.env
    depends_on:
      db:
        condition: service_healthy
  admin:
    container_name: bjm_admin
    build: ./admin
    ports:
      - "3001:3001"
    # ...
  web:
    container_name: bjm_web
    build: ./web
    ports:
      - "3002:3002"
    # ...

networks:
  bjm_net:
    name: bjm-net
volumes:
  db_data_bjm:
    driver: local
  api_data_bjm:
    driver: local

Then ran with docker compose up --watch

Steps to reproduce the issue

1. After the above do change something in the (go file) code
2. Notice that the thing is not updated in the output.
   But in terminal it shows that updated code is taken into container. Following is shown in terminal

bjm_api    | ➡ POST /v1/auth/sign-in - 400
           ⦿ Syncing "api" after changes were detected
           ⦿ Syncing "api" after changes were detected

I think the code was syncked but the executable is not being built. How to solve this?

My setup
Docker version 27.1.1
Ubuntu 24.04