Update Dockerfile

Dockerfile

@@ -1,5 +1,5 @@
 FROM heartexlabs/label-studio:hf-latest
-
+RUN apt-get update && apt-get install -y git
 ################################################################################
 #
 # How to Disable Public Account Creation
@@ -10,7 +10,7 @@ FROM heartexlabs/label-studio:hf-latest
 # access to your space to only authorized users. Uncomment the following line
 # to disable public account creation for this space.
 #
-# ENV LABEL_STUDIO_DISABLE_SIGNUP_WITHOUT_LINK=true
+ENV LABEL_STUDIO_DISABLE_SIGNUP_WITHOUT_LINK=true
 #
 # Set secrets in your space to create an inital user, and log in with your
 # provided username and password. Do not set these in your Dockerfile, as they