Update container and git ignore

Author: nhsd-david-wass

.gitignore

@@ -27,3 +27,4 @@ dist
 /sandbox/*.log
 /sandbox-staging
 /specification/api/components/examples
+/scripts/JWT/*.pem

scripts/JWT/README.md

@@ -38,6 +38,6 @@
 
    | Header Name | Header Value |
    |--------------|--------------|
-   | Authorization | Bearer <access token> |
+   | Authorization | `Bearer <access token>` |
 
 ---

scripts/devcontainer/postcreatecommand.sh

@@ -8,6 +8,8 @@ source ~/.zshrc
 make _install-dependencies # required before config to ensure python is available due to race between config:: make targets
 make config
 
+pip install --user requests pyjwt cryptography
+
 sudo gem install jekyll bundler
 jekyll --version && cd docs && bundle install