Add Gitpod configuration (#735)

.gitpod.Dockerfile

@@ -0,0 +1,5 @@
+FROM gitpod/workspace-full:legacy-dazzle-v1
+
+RUN bash -c ". .nvm/nvm.sh && nvm install lts/fermium && nvm use lts/fermium && nvm alias default lts/fermium"
+
+RUN echo "nvm use default &>/dev/null" >> ~/.bashrc.d/51-nvm-fix

.gitpod.yml

@@ -0,0 +1,54 @@
+image:
+  file: .gitpod.Dockerfile
+
+tasks:
+  - name: frontend
+    init: |
+      make sign-off
+      npm install
+      npm run build
+      cp -R build package/kedro_viz/html
+    command: |
+      gp sync-done build_complete
+      DANGEROUSLY_DISABLE_HOST_CHECK=true npm run start
+  - name: backend
+    before: echo PIP_USER=no >> ~/.bashrc && export PIP_USER=no
+    init: |
+      pip install -r package/test_requirements.txt -r demo-project/src/docker_requirements.txt --user
+      pip install https://github.com/kedro-org/kedro/archive/main.zip --no-deps --user --force-reinstall
+    command: | 
+      gp sync-await build_complete
+      pip install -e package --no-deps
+      gp sync-done kedro_installed
+      make run
+  - name: demo-project
+    command: |
+      cd demo-project
+      gp sync-await kedro_installed
+      kedro info
+
+ports:
+  - port: 4141
+    onOpen: open-browser
+    visibility: public
+  - port: 4142
+    onOpen: ignore
+
+vscode:
+  extensions:
+    - dbaeumer.vscode-eslint
+
+github:
+  prebuilds:
+    # enable for the master/default branch (defaults to true)
+    master: true
+    # enable for all branches in this repo (defaults to false)
+    branches: true
+    # enable for pull requests coming from this repo (defaults to true)
+    pullRequests: true
+    # enable for pull requests coming from forks (defaults to false)
+    pullRequestsFromForks: true
+    # add a "Review in Gitpod" button as a comment to pull requests (defaults to true)
+    addComment: false
+    # add a "Review in Gitpod" button to pull requests (defaults to false)
+    addBadge: true