docker-compose：无法将本地模块添加到项目中，找不到 package.json 文件

Question

I have two projects, let's say, projectA and projectB. The folder heirarchy looks like the following:

projects
    - banking
        - accounts
           - projectA
        - loans
           - projectB

I added projectA to projectB as a local module using npm install and this worked as I was able to access the code. However, when I tried to push projectB to the docker server using docker-compose running through WebStorm I am receiving an error:

npm ERR! code ENOLOCAL

npm ERR. Could not install from "../../accounts/projectA" as it does not contain a package.json file.

This is strange as this folder definitely contains a package.json file. Also, it seems to fail when it tries to run this command line

RUN cd /home/parent && npm install --production

1. What would block it from seeing the package.json file, if it is there?
2. What would I need to do to make this work as local modules definitely make sense in this case but are not playing well with docker?

Answer 1

when you execute a docker build you send all the current directory to docker (its called context). then it starts building things.

it means that docker only has access to a particular folder (usually the current folder)

../ is therefore out of it