Warning - Firefox 67 has changed default profile handling

[accetto]

Warning!

Firefox 67 has changed default profile handling, as described in Moving to a Profile per Install Architecture.

The consequence is, that the pre-created folder profile0.default, which contains the file user.js with the user preferences, will not be automatically used. Firefox 67 will create a new profile, named like *.default-release.

Until I'll relase an updated Docker image, you can use the following work-around.

The best is to start Firefox 67 right away from the terminal window with the parameter -P (capital P):

firefox -P

The Profile Manager dialog window will be displayed. How it looks like is shown in my Wiki entry How to build images with pre-configured Firefox profiles.

Then select the profile called default, ensure that the check-box Use the selected profile without asking at startup is checked and push the button Start Firefox. Optionally you can also check the check-box Work offline before starting Firefox.

Firefox 67 will create its profile in the pre-created folder profile0.default, where the file user.js with your own preferences is (if you've put any there).

If you have already started Firefox 67 "usual way", it has created its new profile in the folder *.default-release.

The procedure from above remains the same, but this time you'll see two profiles in the Profile Manager's list - default and default-release. Just select the default profile and continue as described previously. Firefox 67 will create another profile in the pre-created folder profile0.defaultand the file user.js with your own preferences will be also included.

The other profile *.default-release will not contain the user.js file. You can copy it manually or you can delete the default-release profile using the Profile Manager.

I'll probably include some helper utility for copying user preferences with the next image release.

Regards
accetto

[accetto]

Solved in release 19.06.