Remove subuser commands

Dockerfile

 FROM docker:20.10-dind AS docker_host
 FROM debian:trixie
 
-ARG USERNAME=rustbuilder
-ARG USER_UID=1000
-ARG USER_GID=$USER_UID
-
 ARG RUST_VERSION
 ARG NODE_VERSION
 
 ENV RUST_VERSION=${RUST_VERSION:-1.84}
 ENV NODE_VERSION=${NODE_VERSION:-22.11.0}
 
-RUN groupadd --gid $USER_GID $USERNAME \
-    && useradd --uid $USER_UID --gid $USER_GID -m $USERNAME
-
 RUN apt-get update && \
     apt-get install -y sudo curl wget zip unzip make build-essential clang rustup libpq-dev libsqlite3-dev && \
     rm -rf /var/lib/apt/lists/*
 
-RUN echo $USERNAME ALL=\(root\) NOPASSWD:ALL > /etc/sudoers.d/$USERNAME && \
-    chmod 0440 /etc/sudoers.d/$USERNAME
-
-USER $USERNAME
-
 ENV NVM_DIR=/home/${USERNAME}/.nvm
 
 RUN curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.40.1/install.sh | bash
@@ -41,6 +29,4 @@ RUN cargo install cross --git https://github.com/cross-rs/cross
 COPY --from=docker_host /usr/local/bin/docker /usr/local/bin/docker
 
 ENV CROSS_CONTAINER_IN_CONTAINER=true
-ENV CROSS_CONTAINER_UID=${USER_UID}
-ENV CROSS_CONTAINER_GID=${USER_GID}
 ENV PATH="${PATH}:/home/${USERNAME}/.cargo/bin:${NVM_DIR}/versions/node/v${NODE_VERSION}/bin/"
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