SWAG and WordPress in a subfolder

Desired setup

A SWAG reverse proxy should forward requests to WordPress running in the official wordpress docker image. The URL which is served by the reverse proxy is not the domain root, but a subfolder “blog”: https://www.example.com/blog.

What does not work

Letting the docker image itself serve wordpress in the root folder and write some clever proxy / rewrite rules. At first it seems to work, but when it comes wp-admin URLs like https://www.example.com/blog/wp-admin a magic redirection happens to https://www.example.com/wp-admin which points to outside the WordPress installation.

Fiddling around with RELOCATE, WP_HOME and WP_SITEURL does not solve the problem.

As it turns out WordPress needs to know the fact that it is installed in a subfolder, quote:

What you’ll want to do is run your WordPress container with WORKDIR set to /var/www/html/lab so it knows it is in a subdirectory and acts accordingly.

Continue reading “SWAG and WordPress in a subfolder”