Update dev container config to support live code sync and improve docker setup guide (sgl-project#6018)

Signed-off-by: Lifu Huang <[email protected]>

Author: lifuhuang

.devcontainer/devcontainer.json

@@ -21,16 +21,13 @@
         "--gpus",
         "all"
     ],
-<<<<<<< HEAD
     "mounts": [
         "type=bind,source=/home/azureuser/.cache/huggingface/,target=/root/.cache/huggingface"
     ],
-=======
     // The two lines below ensures that your local changes in the sglang
     // repo is automatically synced to the sglang pip package installed
     // in the dev docker container. You can remove / comment out these
     // two lines if you prefer to sync code changes manually.
->>>>>>> 1232f7e8 (Update dev container config to support live code sync and improve docker setup guide   (#6018))
     "workspaceMount": "source=${localWorkspaceFolder},target=/sgl-workspace/sglang,type=bind",
     "workspaceFolder": "/sgl-workspace/sglang"
 }