Fix network not created by compose error

Introduced in Docker Compose 2.19.1

Author: sichapman

apps/root-compose-fragment.yml

@@ -1 +1,6 @@
 services: {}
+
+networks:
+  default:
+    name: 'dv_default'
+    external: true

apps/root-docker-compose-fragment.3.7.yml

@@ -1 +1,6 @@
 version: '3.7'
+
+networks:
+  default:
+    name: 'dv_default'
+    external: true

apps/root-docker-compose-fragment.yml

@@ -1 +1,6 @@
 version: '2'
+
+networks:
+  default:
+    name: 'dv_default'
+    external: true

logic.rb

@@ -76,7 +76,7 @@
 
 # Does a version check and self-update if required
 if options['self_update']
-  this_version = '1.21.1'
+  this_version = '1.21.2'
   puts colorize_lightblue("This is a universal dev env (version #{this_version})")
   # Skip version check if not on master (prevents infinite loops if you're in a branch that isn't up to date with the
   # latest release code yet)