removes CONTAINER_PREFIX from example.env (redundant)

example.env

@@ -1,7 +1,3 @@
-# A prefix for remote container names
-# If you're running on ARM 32-bit CPU architecture, use 'armv7/', otherwise keep blank
-CONTAINER_PREFIX=
-
 # The hostname to use for the local SMTP server
 LOCAL_SMTP_HOST=smtp
 

install.sh

@@ -97,7 +97,8 @@ do
       fi
     fi
 
-    echo "${var_name}=${!var_name}" >> /home/joeac.net/joeac.net/.env
+    var_value="$(expr "$(env | grep "^${var_name}=")" : "${var_name}=\(.*\)\$")"
+    echo "${var_name}=${var_value}" >> /home/joeac.net/joeac.net/.env
   fi
 done </home/joeac.net/joeac.net/example.env