devcontainer use non-root user

.devcontainer.json

@@ -5,5 +5,6 @@
 	],
 	"extensions": [
 		"ms-python.python"
-	]
+	],
+	"remoteUser": "simbricks"
 }

docker/Dockerfile.buildenv

@@ -44,3 +44,15 @@ RUN cd /tmp \
  && make -j`nproc` \
  && make install \
  && rm -rf /tmp/verilator
+
+# Add non-root user for vs code devcontainer.
+ARG USERNAME=simbricks
+ARG USER_UID=1000
+ARG USER_GID=$USER_UID
+RUN groupadd --gid $USER_GID $USERNAME \
+ && useradd --uid $USER_UID --gid $USER_GID -m $USERNAME --shell /bin/bash \
+# Add sudo support for this user and remove the need to type in password.
+ && apt-get update \
+ && apt-get install -y sudo \
+ && echo $USERNAME ALL=\(root\) NOPASSWD:ALL > /etc/sudoers.d/$USERNAME \
+ && chmod 0440 /etc/sudoers.d/$USERNAME