I am struggling to set docker compose with 2 apps (2 different docker files). I searched through documentation and other StackOverflow answers it seems like there are some similarities but still i cannot apply anything that works.

goal: set 2 apps that will talk with each other.

I am using:

docker-compose up -d

When in Project folder.

• Project:
  • APP1
    • SRC
      • server.js
    • dockerfile1
  • APP2
    • app.js
    • dockerfile2
  • docker-compose

dockerfile1

FROM node:14.15-alpine

WORKDIR /app1

COPY ./package.json ./package-lock.json ./
RUN npm install

RUN mkdir ./src
COPY ./src ./src

CMD ["node", "./src/server.js"]

dockerfile2

FROM node:14.15-alpine

WORKDIR /app2

COPY ./package.json ./package-lock.json ./
RUN npm install

COPY ./ ./

CMD ["node", "./app.js"]

docker-compose

version: "3.2"
services:
  app1:
    build:
      context: .
      dockerfile: ./app1/dockerfile1
    ports:
      - published: ${APP_PORT:-4000}
        target: 4000
    volumes:
      - .:/app/
  app2:
    build:
      context: .
      dockerfile: ./app2/dockerfile2
    ports:
      - published: ${APP_PORT:-3000}
        target: 3000
    volumes:
      - .:/app/

ERROR:

app1 | internal/modules/cjs/loader.js:883

app1 | throw err;

app1 | ^

app1 |

app1 | Error: Cannot find module '/app1/src/server.js'

app1 | at Function.Module._resolveFilename (internal/modules/cjs/loader.js:880:15)

app1| at Function.Module._load (internal/modules/cjs/loader.js:725:27)

app1| at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:72:12)

app1| at internal/main/run_main_module.js:17:47 {

app1| code: 'MODULE_NOT_FOUND',

app1| requireStack: []

app1| }

Source: Docker Questions