(fix) make regex for resources more strict (#1072)

* make regex for resources more strict

* Update validation docs

* Review feedback

docs/manual/indepth/validation.md

@@ -15,8 +15,8 @@ Accepted formats are:
 - Float (eg. `0.5`) - This means half hyperthread
 - Milicpu (eg. `500m`) This means also half hyperthread
 
-Regex used to match those: `^([0-9]+)(\.[0-9]?|m?)$`
+Regex used to match those: `^(?!^0(\.0|m|)$)([0-9]+)(\.[0-9]|m?)$`
-You can try live [here](https://regex101.com/r/pFoJTx/1)
+You can try live [here](https://regex101.com/r/WxComc/1)
 More detailed info can be found [here](https://kubernetes.io/docs/concepts/configuration/manage-resources-containers/#meaning-of-cpu)
 
 __`Memory RAM`__
@@ -27,8 +27,8 @@ Accepted formats are:
 - Plain integer (eg. `134217728`) - This means 128Megabyte of RAM
 - As an exponent format (eg. `134e6`) This means ~128Megabyte of RAM
 
-Regex uesd to match those: `^([0-9.]+)([EPTGMK]i?|[EPTGMK]?|e[0-9]+)$`
+Regex uesd to match those: `^(?!^0(e[0-9]|[EPTGMK]i?|)$)([0-9]+)(|[EPTGMK]i?|e[0-9]+)$`
-You can try live [here](https://regex101.com/r/TUkZhN/1)
+You can try live [here](https://regex101.com/r/LyDc6u/1)
 More detailed info can be found [here](https://kubernetes.io/docs/concepts/configuration/manage-resources-containers/#meaning-of-memory)
 
 

templates/questions/resources.yaml

@@ -14,13 +14,13 @@
                 schema:
                   type: string
                   default: "4000m"
-                  valid_chars: '^([0-9]+)(\.[0-9]?|m?)$'
+                  valid_chars: '^(?!^0(\.0|m|)$)([0-9]+)(\.[0-9]|m?)$'
               - variable: memory
                 label: "Memory RAM"
                 schema:
                   type: string
                   default: "8Gi"
-                  valid_chars: '^([0-9.]+)([EPTGMK]i?|[EPTGMK]?|e[0-9]+)$'
+                  valid_chars: '^(?!^0(e[0-9]|[EPTGMK]i?|)$)([0-9]+)(|[EPTGMK]i?|e[0-9]+)$'
         - variable: requests
           label: "Advanced Request minimum resources required"
           schema:
@@ -31,10 +31,10 @@
                 schema:
                   type: string
                   default: "10m"
-                  valid_chars: '^([0-9]+)(\.[0-9]?|m?)$'
+                  valid_chars: '^(?!^0(\.0|m|)$)([0-9]+)(\.[0-9]|m?)$'
               - variable: memory
                 label: "Memory RAM"
                 schema:
                   type: string
                   default: "50Mi"
-                  valid_chars: '^([0-9.]+)([EPTGMK]i?|[EPTGMK]?|e[0-9]+)$'
+                  valid_chars: '^(?!^0(e[0-9]|[EPTGMK]i?|)$)([0-9]+)(|[EPTGMK]i?|e[0-9]+)$'