Disable the privacy notice page on first start.

rootfs/etc/cont-init.d/55-firefox.sh

@@ -6,6 +6,7 @@ set -u # Treat unset variables as an error.
 # Make sure some directories are created.
 mkdir -p /config/downloads
 mkdir -p /config/log/firefox
+mkdir -p /config/profile
 
 # Generate machine id.
 if [ ! -f /etc/machine-id ]; then
@@ -13,6 +14,9 @@ if [ ! -f /etc/machine-id ]; then
     cat /proc/sys/kernel/random/uuid | tr -d '-' > /etc/machine-id
 fi
 
+# Copy default preferences.
+[ -f /config/profile/prefs.js ] || cp /defaults/prefs.js /config/profile/prefs.js
+
 # Verify the size of /dev/shm.
 SHM_SIZE_MB="$(df -m /dev/shm | tail -n 1 | tr -s ' ' | cut -d ' ' -f2)"
 if [ "$SHM_SIZE_MB" -eq 64 ]; then