Update README.md - Dev Containers (Azure-Samples#829)

Replace Remote Containers with Dev Containers
Add instructions for using Dev Containers

README.md

@@ -8,7 +8,7 @@
   - [Cost estimation](#cost-estimation)
   - [Project setup](#project-setup)
     - [GitHub Codespaces](#github-codespaces)
-    - [VS Code Remote Containers](#vs-code-remote-containers)
+    - [VS Code Dev Containers](#vs-code-dev-containers)
     - [Local environment](#local-environment)
   - [Deploying from scratch](#deploying-from-scratch)
   - [Deploying with existing Azure resources](#deploying-with-existing-azure-resources)
@@ -28,7 +28,7 @@
   - [Troubleshooting](#troubleshooting)
 
 [![Open in GitHub Codespaces](https://img.shields.io/static/v1?style=for-the-badge&label=GitHub+Codespaces&message=Open&color=brightgreen&logo=github)](https://github.com/codespaces/new?hide_repo_select=true&ref=main&repo=599293758&machine=standardLinux32gb&devcontainer_path=.devcontainer%2Fdevcontainer.json&location=WestUs2)
-[![Open in Remote - Containers](https://img.shields.io/static/v1?style=for-the-badge&label=Remote%20-%20Containers&message=Open&color=blue&logo=visualstudiocode)](https://vscode.dev/redirect?url=vscode://ms-vscode-remote.remote-containers/cloneInVolume?url=https://github.com/azure-samples/azure-search-openai-demo)
+[![Open in Dev Containers](https://img.shields.io/static/v1?style=for-the-badge&label=Dev%20Containers&message=Open&color=blue&logo=visualstudiocode)](https://vscode.dev/redirect?url=vscode://ms-vscode-remote.remote-containers/cloneInVolume?url=https://github.com/azure-samples/azure-search-openai-demo)
 
 This sample demonstrates a few approaches for creating ChatGPT-like experiences over your own data using the Retrieval Augmented Generation pattern. It uses Azure OpenAI Service to access the ChatGPT model (gpt-35-turbo), and Azure Cognitive Search for data indexing and retrieval.
 
@@ -87,11 +87,16 @@ You can run this repo virtually by using GitHub Codespaces, which will open a we
 
 [![Open in GitHub Codespaces](https://img.shields.io/static/v1?style=for-the-badge&label=GitHub+Codespaces&message=Open&color=brightgreen&logo=github)](https://github.com/codespaces/new?hide_repo_select=true&ref=main&repo=599293758&machine=standardLinux32gb&devcontainer_path=.devcontainer%2Fdevcontainer.json&location=WestUs2)
 
-#### VS Code Remote Containers
+#### VS Code Dev Containers
 
-A related option is VS Code Remote Containers, which will open the project in your local VS Code using the [Dev Containers extension](https://marketplace.visualstudio.com/items?itemName=ms-vscode-remote.remote-containers):
+A related option is VS Code Dev Containers, which will open the project in your local VS Code using the [Dev Containers extension](https://marketplace.visualstudio.com/items?itemName=ms-vscode-remote.remote-containers):
 
-[![Open in Remote - Containers](https://img.shields.io/static/v1?style=for-the-badge&label=Remote%20-%20Containers&message=Open&color=blue&logo=visualstudiocode)](https://vscode.dev/redirect?url=vscode://ms-vscode-remote.remote-containers/cloneInVolume?url=https://github.com/azure-samples/azure-search-openai-demo)
+1. Start Docker Desktop (install it if not already installed)
+1. Open the project:
+    [![Open in Dev Containers](https://img.shields.io/static/v1?style=for-the-badge&label=Dev%20Containers&message=Open&color=blue&logo=visualstudiocode)](https://vscode.dev/redirect?url=vscode://ms-vscode-remote.remote-containers/cloneInVolume?url=https://github.com/azure-samples/azure-search-openai-demo)
+1. In the VS Code window that opens, once the project files show up (this may take several minutes), open a terminal window
+1. Run `azd auth login`
+1. Now you can follow the instructions in [Deploying from scratch](#deploying-from-scratch) below
 
 #### Local environment