Merge pull request #517 from revant/dev-docs

dev updates

devcontainer-example/docker-compose.yml

@@ -30,6 +30,8 @@ services:
   frappe:
     image: frappe/bench:latest
     command: sleep infinity
+    environment:
+      - SHELL=/bin/bash
     volumes:
       - ..:/workspace:cached
     working_dir: /workspace/development

development/README.md

@@ -58,7 +58,7 @@ Notes:
 Run the following commands in the terminal inside the container. You might need to create a new terminal in VSCode.
 
 ```shell
-bench init --skip-redis-config-generation --frappe-branch version-12 frappe-bench
+bench init --skip-redis-config-generation --frappe-branch version-13 frappe-bench
 cd frappe-bench
 ```