Docker: Using COPY when the Dockerfile is located in a subdirectory

Question

I\'m building an app using multiple dockerfiles (one for each service). My app\'s directory structure is as follows:

app
├── dockerfiles
│   ├── webserver
│   │          


        

Answer 1

All you need to do here is add context: . and dockerfile in your build section inside your docker-compose.yml file so that your service understands the complete directory structure.

# docker-compose.yml
version: "3"
services:
  webserver:
    build:
      context: .
      dockerfile: ./dockerfiles/webserver/Dockerfile
    image: webserver:php-apache

Answer 2

The scope for the COPY instruction is the folder where Dockerfile is. My suggestion is to change your Dockerfile to public folder and change the instruction to COPY . /var/www/html.