This patch slightly changes the behavior of the `AUDIOBOOKSHELF_UID` and
`AUDIOBOOKSHELF_GID` options. Instead of defining a default user and
group, trying to modify files and silently failing if the filesystem
mode cannot be changed, this patch will just skip the entire process in
the first place.
If these options are defined, Audiobookshelf should behave exactly as
before. If they are not defined, Audiobookshelf will now cause fewer
file modifications (or less failures when trying to modify files).
If this patch gets applied, it should probably be highlighted in the
release notes. This usually shouldn't cause problems for migrations
since the Docker guides explicitly configure the options and the
package installations do not seem to use this at all, but there is still
a change that it will and users should be aware of that.
If a problem arises, users can easily fix the problem by either setting
the permissions once manually to the audiobookshelf user or by simply
defining the `AUDIOBOOKSHELF_UID/GID` options.
Assigning something to `process.env.profile`, Node stringifies the value. This
means that assigning `undefined` to an environment variable in Node will result
in it holding the string `undefined`.
This means, for example, that `module.exports.FFPROBE_PATH || 'ffprobe'` in
`server/libs/nodeFfprobe/index.js` will actually result in the string
`undefined`.
This patch fixes several such assignments in the `index.js`, potentially
causing problems in the development mode.
