Remove prompt for uninstalling via pip

.devcontainer/devcontainer.json

@@ -7,7 +7,7 @@
 		"LOCAL_WORKSPACE_FOLDER": "${localWorkspaceFolder}"
 	},
 	"onCreateCommand": "mkdir -p ${EPHYS_ROOT_DATA_DIR} && pip install -e .[nwb]",
-	"postStartCommand": "pip uninstall hdmf && pip install pynwb && docker volume prune -f && s3fs ${DJ_PUBLIC_S3_LOCATION} ${EPHYS_ROOT_DATA_DIR} -o nonempty,multipart_size=530,endpoint=us-east-1,url=http://s3.amazonaws.com,public_bucket=1",
+	"postStartCommand": "pip uninstall -y hdmf && pip install -y pynwb && docker volume prune -f && s3fs ${DJ_PUBLIC_S3_LOCATION} ${EPHYS_ROOT_DATA_DIR} -o nonempty,multipart_size=530,endpoint=us-east-1,url=http://s3.amazonaws.com,public_bucket=1",
 	"hostRequirements": {
 		"cpus": 4,
 		"memory": "8gb",