Add the EM_ONLINE setting.

minetestenv-in-place.rc

@@ -548,6 +548,10 @@ minimize_mod() {
     done
 }
 
+if [ "@$EM_ONLINE" = "@" ]; then
+    EM_ONLINE="true"
+fi
+
 install_git_mod_here(){
     PREV_DIR="`pwd`"
     THIS_MODS_PATH="`pwd`"
@@ -578,6 +582,7 @@ install_git_mod_here(){
     else
         cd "$THIS_MOD_REPO" || customExit "(install_git_mod_here) 'cd \"$THIS_MOD_REPO\"' failed in '`pwd`'"
         # echo "  * updating '`pwd`' from git..."
+        if [ "@$EM_ONLINE" != "@false" ]; then
             GIT_OUTPUT=$(git pull)
             if [ "$GIT_OUTPUT" != "Already up to date." ]; then
                 echo "  $GIT_OUTPUT"
@@ -586,6 +591,7 @@ install_git_mod_here(){
                 echo "WARNING: (install_git_mod_here) 'git pull' failed in '`pwd`'"
             fi
         fi
+    fi
 
     cd "$PREV_DIR" || customExit "(install_git_mod_here) 'cd ..' failed in '`pwd`'"