I experience the same issue.

I haven't worked with the Docker container that much, but usually when this issue occurs it's due to an issue with the _config.yml file and where Jekyll is looking for the files. Something to check might be that the baseurl setting makes sense for working inside of the container.

I ran into the same issue and I’m happy to share that I managed to solve it by adding an extra config file specifically for Docker and slightly modifying my docker-compose.yml. 🙌

✅ Step 1: Add a new config file

Create a file called _config_docker.yml with this line:

url: ""

✅ Step 2: Update your docker-compose.yml

Make sure your docker-compose.yml looks like this:

services:
 jekyll-site:
 image: jekyll-site
 build: .
 volumes: [ .:/usr/src/app ]
 ports: [ 4000:4000 ]
 environment: [JEKYLL_ENV=docker]
 user: 1000:1000
 command: jekyll serve --host 0.0.0.0 -w --config _config.yml,_config_docker.yml

The key part is adding the extra config file to the command section and setting the environment variable.

This idea came from a super helpful Stack Overflow post — huge thanks to the folks over there! 🙏

Hope this helps someone else! 😊