CODEWITHSUNDEEP
macosdockerdocker-compose
laketuna
laketuna

Reputation: 4090

Docker-Compose mounted files are not owned by root

I'm mounting files from my laptop's/host machine's working directory into the container, and I'm not sure why the mounted files are owned by www-data. q was created on the host machine, so it's owned by root, as expected.

Inside container:

enter image description here

Some other observations:

Host UID (my OS X account): 1783256022 (not sure why it looks like this)

Container UID (www-data): 33

Dockerfile:

FROM nginx:1.13.8

RUN apt-get update
RUN apt-get install -y nano && \
    apt-get install -y git && \
    apt-get install -y procps && \
    apt-get install net-tools

RUN mkdir -p /var/www/html
WORKDIR /var/www/html

docker-compose.yml:

version: '3'
services:

  web:
    build:
      context: ./docker/nginx
    image: tc-web:0.1.0
    container_name: tc-web
    volumes:
      - ./:/var/www/html/
      - ./docker/nginx/.bashrc:/root/.bashrc
      - ./docker/nginx/nginx.conf:/etc/nginx/nginx.conf
      - ./docker/nginx/default.conf:/etc/nginx/conf.d/default.conf
    ports:
      - 8080:80

Upvotes: 1

Views: 746

Answers (1)

whites11
whites11

Reputation: 13300

When you mount a directory using volumes in a Unix like system, files will keep the same permissions they have in the host in terms of uid a gid. That means that the uid that created the files in your host (your user probably) has the same user id of the www-data user inside the container.

When you create a file from inside the container, since the container is run as the root user, files will be owned by the root user (inside and outside the Container).

Upvotes: 2

Related Questions