docker: firefox: overwrite user.js instead of appending on every run, #261

Author: vogler

docker-entrypoint.sh

@@ -16,7 +16,13 @@ rm -f /fgc/data/browser/SingletonLock
 # Since this file has to be in the volume (data/browser), we can't do this in Dockerfile.
 mkdir -p /fgc/data/browser
 # fix for 'Incorrect response' after solving a captcha correctly - https://github.com/vogler/free-games-claimer/issues/261#issuecomment-1868385830
-echo 'user_pref("privacy.resistFingerprinting", true);' >> /fgc/data/browser/user.js
+# echo 'user_pref("privacy.resistFingerprinting", true);' > /fgc/data/browser/user.js
+cat << EOT > /fgc/data/browser/user.js
+user_pref("privacy.resistFingerprinting", true);
+// user_pref("privacy.resistFingerprinting.letterboxing", true);
+// user_pref("browser.contentblocking.category", "strict");
+// user_pref("webgl.disabled", true);
+EOT
 # TODO disable session restore message?
 
 # Remove X server display lock, fix for `docker compose up` which reuses container which made it fail after initial run, https://github.com/vogler/free-games-claimer/issues/31