Hey there! Let's work through this 403 Forbidden issue you're hitting—totally get how annoying it is when you follow a tutorial step-by-step and still run into roadblocks, especially when you're new to Docker.

Based on what you've shared, here are the most likely fixes to try, tailored to your Windows 10 + Docker for Windows setup:

1. Verify Your Mount Path is Correct #

Windows and Docker use different path conventions, and this is a super common pitfall. Your current command uses a Linux-style path /wmi/tutorials/docker/src/, but Docker for Windows might not be resolving this correctly to your actual local directory.

• Try the Windows-compatible path format:
  Replace the Linux-style path with your Windows absolute path, using forward slashes instead of backslashes. For example, if your src folder is at C:\wmi\tutorials\docker\src, update your run command to:

  docker run -p 80:80 -v C:/wmi/tutorials/docker/src:/var/www/html/ hello-world
  

• Validate the mount worked:
  Run this command to peek inside the container and check if your index.php is actually in the mounted directory:

  docker exec -it [your-container-name] ls -l /var/www/html
  

  If you don't see index.php listed here, your path is wrong—double-check the local directory path you're using.

2. Fix File/Directory Permissions #

When mounting Windows folders into a Linux-based Docker container, the file permissions often default to root:root, which means the Apache web server (running as the www-data user) can't read your index.php file.

• Update permissions inside the container:
  Run this command to change ownership of the mounted directory to the Apache user:

  docker exec -it [your-container-name] chown -R www-data:www-data /var/www/html
  

• If you built the hello-world image yourself:
  Add these lines to your Dockerfile to set permissions automatically when the image is built:

  # Set ownership of web root to Apache user
  RUN chown -R www-data:www-data /var/www/html
  

3. Ensure Apache Recognizes index.php as a Default Page #

If Apache isn't configured to use index.php as a default landing page, it'll throw a 403 error when it can't find an index.html file (and directory listing is disabled by default).

• Check Apache's default page config:
  Inside the container, look at the Apache site config:

  docker exec -it [your-container-name] cat /etc/apache2/sites-available/000-default.conf
  

  Look for a line starting with DirectoryIndex—it should include index.php like this:

  DirectoryIndex index.php index.html

• Add this to your Dockerfile (if building your own image):
  If the line is missing, add these commands to your Dockerfile to update the config:

  # Enable PHP module (adjust version to match your PHP install)
  RUN a2enmod php7.4
  # Set index.php as a default landing page
  RUN echo "DirectoryIndex index.php index.html" >> /etc/apache2/apache2.conf
  

4. Dig Into Detailed Error Logs #

Your docker logs output might give hints, but Apache's internal error log will have the exact reason for the 403. Run this to check it:

docker exec -it [your-container-name] cat /var/log/apache2/error.log

Look for lines mentioning "permission denied" or "File does not exist"—this will point you straight to the root cause.

Start with the path and permission checks first—those are the most frequent culprits in Windows Docker setups. Let me know if any of these steps get you back up and running!

内容的提问来源于stack exchange，提问作者Will Marcouiller