fix: replace problematic lines in user-fix vs replace file

Makes this compatible to both OctoPi 1.0.0 and 1.1.0.

Author: foosel

scripts/80-install-user-fix

@@ -6,16 +6,17 @@ export LC_ALL=C
 source /common.sh
 install_cleanup_trap
 
-# this is intentionally commented out because our user-fix script has 
-# to be changed compared the one already shipping with OctoPi
-#[ -f '/root/bin/user-fix' ] && exit 0
+if [ -f '/root/bin/user-fix' ]; then
+    # user-fix is already there, make sure that no reference to webcamd remains
+    sed -i "/\/root\/bin\/webcamd/d" /root/bin/user-fix
+else
+    # we need to install virtualenv-tools3, so let's get pip and that
+    apt-get install -y python3-pip
+    sudo -u pi pip3 install --user virtualenv-tools3
 
-# we need to install virtualenv-tools3, so let's get pip and that
-apt-get install -y python3-pip
-sudo -u pi pip3 install --user virtualenv-tools3
+    cp /files/user-fix /root/bin/user-fix
+    chmod +x /root/bin/user-fix
 
-cp /files/user-fix /root/bin/user-fix
-chmod +x /root/bin/user-fix
-
-cp /files/user-fix.service /etc/systemd/system/user-fix.service
-systemctl enable user-fix.service
+    cp /files/user-fix.service /etc/systemd/system/user-fix.service
+    systemctl enable user-fix.service
+fi