Try fix devcontainer

Author: nojaf

.devcontainer/Dockerfile

@@ -19,8 +19,16 @@ RUN apt-get update \
     && apt-get -y install git iproute2 procps lsb-release \
     #
     # Create a non-root user to use if preferred - see https://aka.ms/vscode-remote/containers/non-root-user.
-    && groupadd --gid $USER_GID $USERNAME \
-    && useradd -s /bin/bash --uid $USER_UID --gid $USER_GID -m $USERNAME \
+    # Create group if it doesn't exist (handle case where GID already exists)
+    && if ! getent group $USERNAME > /dev/null 2>&1; then \
+        groupadd --gid $USER_GID $USERNAME 2>/dev/null || \
+        (EXISTING_GROUP=$(getent group $USER_GID | cut -d: -f1) && groupmod -n $USERNAME $EXISTING_GROUP); \
+    fi \
+    # Create user if it doesn't exist (handle case where UID already exists)
+    && if ! getent passwd $USERNAME > /dev/null 2>&1; then \
+        useradd -s /bin/bash --uid $USER_UID --gid $USER_GID -m $USERNAME 2>/dev/null || \
+        (EXISTING_USER=$(getent passwd $USER_UID | cut -d: -f1) && usermod -l $USERNAME -d /home/$USERNAME -m $EXISTING_USER); \
+    fi \
     # [Optional] Add sudo support for the non-root user
     && apt-get install -y sudo \
     && echo $USERNAME ALL=\(root\) NOPASSWD:ALL > /etc/sudoers.d/$USERNAME\

.devcontainer/devcontainer.json

@@ -30,6 +30,6 @@
 	// Use 'postCreateCommand' to run commands after the container is created.
 	"postCreateCommand": "dotnet tool restore && dotnet restore",
 
-	// Uncomment to connect as root instead. More info: https://aka.ms/dev-containers-non-root.
-	"remoteUser": "root"
+	// Use the non-root user created in the Dockerfile. More info: https://aka.ms/dev-containers-non-root.
+	"remoteUser": "vscode"
 }