Overwrite nginx html directory in Docker compose configuration

Question

I just started working with docker and am quite enthusiastic so far! At the moment, I am trying to build an extremely basic and extendable file that just serves basic static websites. I figured that this shouldn't be so difficult, but I have the following problem:

The following docker-compose.yml file still shows the default nginx index.html file, I expected that this would be overwritten by my project folder ./code. Can I overwrite all files in /usr/share/nginx/html without adding a separate Dockerfile? I am trying to keep this configuration as minimal as possible.

version: '2'

services:
  web:
    image: nginx:alpine
    ports:
      - "8080:80"
    volumes:
      - ./code:/usr/share/nginx/html

  // Whenever needed php/python/dababase services can be added here

I've just tested your compose file as-is and it worked as expected. I created a simple index.html file in a ./code directory. Stop and start your Docker service and see if that resolves it; I've unfortunately had similar problems that a stop and start resolved. — Chris Townsend
– Chris Townsend, Commented Dec 27, 2016 at 16:37
Hmm strange, I only see the 'Welcome to nginx!' html file. Also after restarting my service. — hY8vVpf3tyR57Xib
– hY8vVpf3tyR57Xib, Commented Dec 27, 2016 at 19:35
The only thing I can think of after that would be that your ./code file is not at the same level as your docker-compose.yml file. Try placing a full path instead of the relative ./code and see if that resolves it. — Chris Townsend
– Chris Townsend, Commented Dec 27, 2016 at 19:41

hY8vVpf3tyR57Xib · Accepted Answer · 2016-12-29 15:45:34Z

2

So I got it working by adding the :z label on my volumes command. So the last line in my code became:

- ./code:/usr/share/nginx/html:z

According to the docker documentation the labels :z and :Z change the label in the container context. These suffixes tell Docker to relabel file objects on the shared volumes. The :z option tells Docker that two containers share the volume content. As a result, Docker labels the content with a shared content label. Shared volume labels allow all containers to read/write content. The :Z option tells Docker to label the content with a private unshared label. Only the current container can use a private volume.

answered Dec 29, 2016 at 15:45

hY8vVpf3tyR57Xib

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