Update logic to valid env in repository url (#540)

* Update logic to valid env in repository url

* Update version

* Update

Co-authored-by: rentu <[email protected]>

Author: SLdragon

package-lock.json

@@ -2,7 +2,7 @@
   "name": "azure-iot-edge",
   "displayName": "Azure IoT Edge",
   "description": "This extension is now a part of Azure IoT Tools extension pack. We highly recommend installing Azure IoT Tools to get full capabilities for Azure IoT development. Develop, deploy, debug, and manage your IoT Edge solution.",
-  "version": "1.21.0-rc1",
+  "version": "1.21.0-rc2",
   "publisher": "vsciot-vscode",
   "aiKey": "95b20d64-f54f-4de3-8ad5-165a75a6c6fe",
   "icon": "logo.png",

package.json

@@ -160,7 +160,7 @@ export class Utility {
     }
 
     public static expandEnv(input: string, overrideKVs: {[name: string]: string} = {}, ...exceptKeys: string[]): string {
-        const pattern: RegExp = new RegExp(/\$([a-zA-Z0-9_]+)|\${([a-zA-Z0-9_]+)}/g);
+        const pattern: RegExp = new RegExp(/\$(\w+)|\${(\w+)}/g);
         const exceptSet: Set<string> = new Set(exceptKeys);
         if (!overrideKVs) {
             overrideKVs = {};
@@ -586,20 +586,25 @@ export class Utility {
             hostName = null;
         }
 
-        if (hostName && /[^a-zA-Z0-9\.\-:\${}]/.test(hostName)) {
-            return "Repository host name can only contain alphanumeric characters or .-:, and ${} are also supported for environment variables";
+        if (hostName) {
+            const hostNameWithoutEnv = hostName.replace(/\$\w+|\${\w+}/g, "");
+            if (/[^\w.-:]/.test(hostNameWithoutEnv)) {
+                return "Repository host name can only contain alphanumeric characters or .-:, and ${} are also supported for environment variables";
+            }
         }
 
-        if (/[^a-z0-9\._\-\/\${}]+/.test(repositoryName)) {
+        const repositoryNameWithoutEnv = repositoryName.replace(/\$\w+|\${\w+}/g, "");
+        if (/[^a-z0-9._\-\/]+/.test(repositoryNameWithoutEnv)) {
             return "Repository name can only contain lowercase letters, digits or ._-/, and ${} are also supported for environment variables";
         }
 
         if (tag) {
-            if (tag.length > 128) {
+            const tagWithoutEnv = tag.replace(/\$\w+|\${\w+}/g, "");
+            if (tagWithoutEnv.length > 128) {
                 return "The maximum length of tag is 128";
             }
 
-            if (/[^a-zA-Z0-9\._\-\${}]+/.test(tag)) {
+            if (/[^\w.-]+/.test(tagWithoutEnv)) {
                 return "Tag can only contain alphanumeric characters or ._-, and ${} are also supported for environment variables";
             }
         }