chore: cleanup references to the old ember app (#5797)

Co-authored-by: Shirshanka Das <shirshanka@apache.org>

datahub-frontend/conf/application.conf

@@ -118,7 +118,7 @@ ui.new.browse.dataset = true
 
 # React App Authentication
 # ~~~~~
-# React currently supports OIDC SSO + self-configured JAAS (same as Ember) for authentication. Below you can find the supported configurations for
+# React currently supports OIDC SSO + self-configured JAAS for authentication. Below you can find the supported configurations for
 # each mechanism.
 #
 # Required OIDC Configuration Values:

datahub-frontend/play.gradle

@@ -13,11 +13,7 @@ configurations {
 }
 
 dependencies {
-  if (project.hasProperty('enableEmber') && project.getProperty('enableEmber').toBoolean()) {
-    assets project(path: ':datahub-web', configuration: 'assets')
-  } else {
   assets project(path: ':datahub-web-react', configuration: 'assets')
-  }
 
   constraints {
     play('org.springframework:spring-core:5.2.3.RELEASE')

datahub-web-react/README.md

@@ -5,15 +5,14 @@ title: "datahub-web-react"
 # DataHub React App
 
 ## About
-This module contains a React version of the DataHub UI. This is now the production version of the DataHub client experience. 
-Notice that this is a completely separate frontend experience from the legacy Ember app and will remain so as it evolves. 
+This module contains a React application that serves as the DataHub UI.
 
 Feel free to take a look around, deploy, and contribute. 
 
 For details about the motivation please see [this RFC](../docs/rfc/active/2055-react-app/README.md). 
 
 ## Functional Goals
-The initial milestone for the app was to achieve functional parity with the existing Ember app. This meant supporting
+The initial milestone for the app was to achieve functional parity with the previous Ember app. This meant supporting
 
 - Dataset Profiles, Search, Browse Experience
 - User Profiles, Search
@@ -22,7 +21,7 @@ The initial milestone for the app was to achieve functional parity with the exis
 This has since been achieved. The new set of functional goals are reflected in the latest version of the [DataHub Roadmap](../docs/roadmap.md). 
 
 ## Design Goals
-In building out the client experience, we intend to leverage learnings from the Ember app and incorporate feedback gathered
+In building out the client experience, we intend to leverage learnings from the previous Ember-based app and incorporate feedback gathered
 from organizations operating DataHub. Two themes have emerged to serve as guideposts:
 
 1. **Configurability**: The client experience should be configurable, such that deploying organizations can tailor certain 

docker/datahub-frontend/Dockerfile

@@ -15,14 +15,13 @@ FROM --platform=$BUILDPLATFORM node:16.13.0-alpine3.14 AS prod-build
 RUN apk --no-cache --update-cache --available upgrade \
     && apk --no-cache add perl openjdk8
 
-ARG ENABLE_EMBER="false"
 ARG USE_SYSTEM_NODE="true"
 ENV CI=true
 ENV GRADLE_OPTS="-Xms256m -Xmx512m"
 COPY . datahub-src
 RUN cd datahub-src \
     && ./gradlew :datahub-web-react:build -x test -x yarnTest -x yarnLint \
-    && ./gradlew :datahub-frontend:dist -PenableEmber=${ENABLE_EMBER} -PuseSystemNode=${USE_SYSTEM_NODE} -x test -x yarnTest -x yarnLint \
+    && ./gradlew :datahub-frontend:dist -PuseSystemNode=${USE_SYSTEM_NODE} -x test -x yarnTest -x yarnLint \
     && cp datahub-frontend/build/distributions/datahub-frontend.zip ../datahub-frontend.zip \
     && cd .. && rm -rf datahub-src && unzip datahub-frontend.zip
 

docker/datahub-frontend/README.md

@@ -14,11 +14,6 @@ If using React app:
 http://localhost:9002
 ```
 
-If using legacy Ember app:
-```
-http://localhost:9001
-```
-
 You can sign in with `datahub` as username and password.
 
 ## Build instructions

docker/quickstart-ember.sh

@@ -1,11 +0,0 @@
-#!/bin/bash
-
-# Quickstarts an Ember-serving variant of DataHub by pulling all images from dockerhub and then running the containers locally.
-DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
-export DATAHUB_VERSION=${DATAHUB_VERSION:-head}
-cd $DIR && docker-compose -f docker-compose.yml -f docker-compose.override.yml -f docker-compose.ember.yml pull && docker-compose -p datahub \
-    -f docker-compose.yml \
-    -f docker-compose.override.yml \
-    -f docker-compose.ember.yml \
-    up \
-    --scale datahub-frontend-react=0