Update files inside a Docker container and update it outside the container-CodePudding

I create an Ionic page inside the container using the container shell and I want to obtain the result files outside the container. I have the src/ folder in a docker volume, if I update the code it updates too in the container but not in the opposite direction. How can I obtain the updates that I make inside the container outside of it?

Dockerfile

FROM node:alpine3.16
WORKDIR /project-meals-mobile-frontend/

RUN npm install -g @ionic/[email protected]
RUN npm install

COPY src/ /project-meals-mobile-frontend/src/

EXPOSE 8100

docker-compose.yml

version: '3'

services:
  ionic:
    container_name: project-meals-ionic
    restart: always
    build: ./
    command:
      ionic serve -p=8100 --external
    volumes:
      - ./src:/app
      - ./node_modules/:/node_modules/
    ports:
      - "8100:8100"

I execute this to go into the container shell:

docker exec -it project-meals-ionic sh

Then I execute the command to generate a page:

ionic generate page schedule

It works if I do an ls I have the corresponding files:

drwxr-xr-x    1 root     root          4096 Jan  5 15:09 .
drwxr-xr-x    1 root     root          4096 Jan  4 21:24 ..
-rw-r--r--    1 root     root           637 Jan  5 15:09 app-routing.module.ts
-rw-r--r--    1 root     root          1170 Jan  4 14:28 app.component.html
-rw-r--r--    1 root     root          1939 Jan  4 14:28 app.component.scss
-rw-r--r--    1 root     root          1523 Jan  4 14:28 app.component.spec.ts
-rw-r--r--    1 root     root           703 Jan  4 14:28 app.component.ts
-rw-r--r--    1 root     root           578 Jan  4 14:28 app.module.ts
drwxr-xr-x    2 root     root          4096 Jan  4 19:28 folder
drwxr-xr-x    2 root     root          4096 Jan  5 15:09 schedule

I need this folder outside the container to edit the code and upload it to git.

CodePudding user response：

you can use docker cp to copy the files from the container to your host machine.

syntax:

docker cp containerName:/path/to/folder /path/on/host

Official doc: https://docs.docker.com/engine/reference/commandline/cp/

CodePudding user response：

Mi problem was that in the docker-compose.yml in the volume declaration I have to use the absolute path inside the docker container not the relative path of the WORKDIR of the Dockerfile. For now if I create/edit a file inside the container it reflects out the container. This is the valid docker-compose.yml code:

    volumes:
      - ./src:/project-meals-mobile-frontend/src/
      - ./node_modules/:/node_modules/