feat: Strip devurl suffixs from input for host (#173)

- This allows devurls suffixs to be added

Author: Emyrk

templates/ingress.yaml

@@ -433,7 +433,16 @@ spec:
             name: {{ include "coder.serviceName" . }}
             port:
               name: tcp-{{ include "coder.serviceName" . }}
-  - host: {{ merge .Values dict | dig "coderd" "devurlsHost" "" | quote }}
+          {{ $devURLHost := merge .Values dict | dig "coderd" "devurlsHost" "" }}
+          # Regex docs on '*-suffix.example.com'. This is required as the original input including the suffix is
+          # not a legal ingress host. We need to remove the suffic, and keep the wildcard '*'.
+          #   - '\\*'     Starts with '*'
+          #   - '[^.]*'   Suffix is 0 or more characters, '-suffix'
+          #   - '('       Start domain capture grp
+          #   -   '\\.'     The domain should be separated with a '.' from the subdomain
+          #   -   '.*'      Rest of the domain.
+          #   - ')'       $1 is the ''.example.com'
+  - host: {{ regexReplaceAll "\\*[^.]*(\\..*)" $devURLHost "*${1}" | quote }}
     http:
       paths:
       - path: /