feat: Changes caching over to a passed in var

azDevOps/azure/templates/v2/steps/build-install-dependencies-node.yml

@@ -11,7 +11,7 @@ parameters:
   customRegistry: ""
   run_build: true
   enable_cache: false
-  npm_config_cache: $(Pipeline.Workspace)/.npm
+  npm_cache_directory: ""
 
 steps:
   # Ensure Node.js 12 is active
@@ -33,18 +33,14 @@ steps:
   # NPM modules and Cypress binary should be cached
   # otherwise the install will be too slow
   # https://docs.microsoft.com/en-us/azure/devops/pipelines/caching/?view=azure-devops
-  # since the username / user home directory are not available via system variables
-  # (there is even an open question about it)
-  # https://docs.microsoft.com/en-us/azure/devops/pipelines/build/variables?view=azure-devops
-  # just use "/home/vsts_azpcontainer/" for now
   - task: Cache@2
     condition: eq(${{ parameters.enable_cache }}, true)
     inputs:
       key: 'npm | $(Agent.OS) | ${{ parameters.workingDirectory }}/package-lock.json'
-      path: $(npm_config_cache)
       restoreKeys: |
         npm | $(Agent.OS)
         npm
+      path: ${{ parameters.npm_cache_directory }}
       cacheHitVar: NPM_CACHE_RESTORED
     displayName: Cache NPM packages