Theia - variable in previewurl is not evaluated after clicking right-bottom notification popup

[sparkoo]

Describe the bug

Having defined previewUrl in command. After running the command, right-bottom notification will pop-up. The URL that is shown in notification is properly evaluated. But clicking on "Preview" button opens un-evaluated URL.

The support for previewUrl in devfile is not merged yet. However, issue can be manually reproduced by editing tasks.json file. Follow steps to reproduce.

Simple devfile to test:

---
apiVersion: 1.0.0
metadata:
  generateName: dummy-go-server-with-one0endpoint
projects:
  -
    name: dummy-http-server
    source:
      type: git
      location: "https://github.com/sparkoo/dummy-http-server.git"
components:
  -
    type: dockerimage
    image: quay.io/eclipse/che-golang-1.10:nightly
    alias: go-cli
    mountSources: true
    memoryLimit: 256Mi
commands:
  -
    name: run 8080
    actions:
      -
        type: exec
        component: go-cli
        command: "go run main.go 8080 /hello"
        workdir: ${CHE_PROJECTS_ROOT}/dummy-http-server

Che version

• nigihtly

Steps to reproduce

1. start workspace with devfile above
2. open .theia/tasks.json file
3. add parameter to task "previewUrl": "${server.theia}"
4. save .theia/tasks.json and run the command
5. right-bottom notification with previewUrl should appear. URL to theia component is correct there
6. click on "Preview" button in the right-bottom notification
7. opened URL is http://${server.theia}, but it should be properly evaluated.

Expected behavior

URL should be evaluated

Runtime

• minikube (include output of minikube version and kubectl version)

Screenshots

Installation method

• helm

Environment

• my computer
  • Linux

Additional context

"Preview" button from bottom Previews panel works ok.

previewUrl support in devfile is currently in review.