Updated Dev Container (#591)

* Added more features in Dev Container
* Made it runnable on AMD platforms

---------

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

.devcontainer/Dockerfile

@@ -1,13 +1,55 @@
 ARG BASE_IMAGE
 FROM ${BASE_IMAGE}
-ARG USERNAME=mscclpp
+ARG USERNAME=devuser
 ARG USER_UID=1000
 ARG USER_GID=$USER_UID
+ARG SSH_PORT=22345
 
-# Create the user
-RUN groupadd --gid $USER_GID $USERNAME && \
-    useradd --uid $USER_UID --gid $USER_GID -m $USERNAME && \
-    echo $USERNAME ALL=\(root\) NOPASSWD:ALL > /etc/sudoers.d/$USERNAME && \
-    chmod 0440 /etc/sudoers.d/$USERNAME
+# Create or modify the user
+RUN if getent group $USER_GID > /dev/null; then \
+        EXISTING_GROUP=$(getent group $USER_GID | cut -d: -f1); \
+        if [ "$EXISTING_GROUP" != "$USERNAME" ]; then \
+            groupmod -n $USERNAME $EXISTING_GROUP; \
+        fi; \
+    else \
+        groupadd --gid $USER_GID $USERNAME; \
+    fi && \
+    if id -u $USER_UID > /dev/null 2>&1; then \
+        EXISTING_USER=$(getent passwd $USER_UID | cut -d: -f1); \
+        if [ "$EXISTING_USER" != "$USERNAME" ]; then \
+            usermod -l $USERNAME -d /home/$USERNAME -m $EXISTING_USER; \
+        fi; \
+    else \
+        useradd --uid $USER_UID --gid $USER_GID -m $USERNAME; \
+    fi && \
+    usermod -g $USERNAME $USERNAME && \
+    echo "$USERNAME ALL=(ALL) NOPASSWD: ALL" >> /etc/sudoers
+
+RUN rm -rf /etc/apt/sources.list.d/cuda-* && \
+    apt-get update && \
+    apt install -y --no-install-recommends \
+        clang-format \
+        openssh-server \
+        gdb \
+        doxygen \
+        graphviz \
+        && \
+    apt-get autoremove -y && \
+    apt-get clean && \
+    rm -rf /var/lib/apt/lists/* /tmp/*
+
+RUN python3 -m pip install --no-cache-dir \
+    black \
+    pytest \
+    breathe \
+    sphinx_rtd_theme \
+    myst_parser \
+    sphinxcontrib.mermaid
+
+RUN sed -i "s/^Port 22/Port ${SSH_PORT}/" /etc/ssh/sshd_config && \
+    mkdir -p /home/$USERNAME/.ssh && \
+    ssh-keygen -t rsa -f /home/$USERNAME/.ssh/id_rsa -N "" -q && \
+    cat /home/$USERNAME/.ssh/id_rsa.pub >> /home/$USERNAME/.ssh/authorized_keys && \
+    chown -R $USERNAME:$USERNAME /home/$USERNAME/.ssh
 
 USER $USERNAME