Sample NodeJS DevWorkspace CR which creates a Openshift DevSpaces workspace

nodejs-devworkspace-cr.yaml

apiVersion: workspace.devfile.io/v1alpha2
kind: DevWorkspace
metadata:
  annotations:
    che.eclipse.org/che-editor: che-incubator/che-code/latest
  name: nodejs-mongodb
  namespace: user1-devspaces
  finalizers:
    - rbac.controller.devfile.io
spec:
  contributions:
    - name: ide
      uri: https://devspaces.apps.cluster-4qzct.4qzct.sandbox2558.opentlc.com/plugin-registry/v3/plugins/che-incubator/che-code/latest/devfile.yaml
  routingClass: che
  started: true
  template:
    attributes:
      controller.devfile.io/devworkspace-config:
        name: devworkspace-config
        namespace: openshift-devspaces
      controller.devfile.io/scc: container-build
      controller.devfile.io/storage-type: per-workspace
    commands:
      - exec:
          commandLine: npm install && node --inspect=9229 app.js
          component: nodejs
          group:
            kind: run
          label: Run the application
          workingDir: '${PROJECTS_ROOT}/nodejs-mongodb-sample'
        id: 1-run
    components:
      - container:
          cpuRequest: '1'
          env:
            - name: SECRET
              value: 220fd770-c028-480d-8f95-f84353c7d55a
            - name: NODE_ENV
              value: production
          memoryRequest: 512Mi
          sourceMapping: /projects
          cpuLimit: '2'
          volumeMounts:
            - name: npm
              path: /home/user/.npm
          memoryLimit: 1Gi
          image: >-
            registry.redhat.io/devspaces/udi-rhel8@sha256:022cc606ec53638f7079a638f0810fee3a1717b42426bcfa31c2ba2e78520c54
          endpoints:
            - exposure: public
              name: nodejs
              protocol: https
              targetPort: 8080
          mountSources: true
        name: nodejs
      - name: npm
        volume:
          size: 1G
      - container:
          cpuRequest: '0.25'
          env:
            - name: MONGODB_USER
              value: user
            - name: MONGODB_PASSWORD
              value: password
            - name: MONGODB_DATABASE
              value: guestbook
            - name: MONGODB_ADMIN_PASSWORD
              value: password
          memoryRequest: 256Mi
          sourceMapping: /projects
          cpuLimit: '1'
          volumeMounts:
            - name: mongo-storage
              path: /var/lib/mongodb/data
          memoryLimit: 512Mi
          image: >-
            registry.redhat.io/rhscl/mongodb-36-rhel7@sha256:9f799d356d7d2e442bde9d401b720600fd9059a3d8eefea6f3b2ffa721c0dc73
          endpoints:
            - exposure: internal
              name: mongodb
              protocol: http
              targetPort: 27017
          mountSources: false
        name: mongo
      - name: mongo-storage
        volume:
          size: 1G
    projects:
      - name: nodejs-mongodb-sample
        zip:
          location: >-
            http://devfile-registry.openshift-devspaces.svc:8080/resources/v2/nodejs-mongodb-sample.zip

Reference: https://access.redhat.com/documentation/en-us/red_hat_openshift_dev_spaces/3.13/html-single/user_guide/index#managing-workspaces-with-apis-creating-workspaces

Remember you need also to create and annotate the user's namespace properly before. Here is an user namespace sample definition.

kind: Namespace
apiVersion: v1
metadata:
  name: user1-devspaces # <-- change username here
  labels:
    app.kubernetes.io/component: workspaces-namespace
    app.kubernetes.io/part-of: che.eclipse.org
    kubernetes.io/metadata.name: user1-devspaces # <-- change username here
  annotations:
    che.eclipse.org/username: user1 # <-- change username here
    openshift.io/description: 'DevSpaces workspace for user1'
spec: {}