Overhaul Dockerfile

Dockerfile

@@ -1,50 +1,89 @@
 ARG DEBIAN_VERSION=13
 
-FROM debian:${DEBIAN_VERSION}
-
-ENV DEBIAN_VERSION=12
-
-ENV DEBIAN_FRONTEND=noninteractive
-
+FROM debian:${DEBIAN_VERSION} AS base
 SHELL ["/bin/bash", "-c"]
+ENV DEBIAN_FRONTEND=noninteractive
 
-RUN source /etc/os-release && apt-get update -y && apt-get install -y curl wget \
-&& wget https://packages.microsoft.com/config/debian/${VERSION_ID}/packages-microsoft-prod.deb \
-&& dpkg -i packages-microsoft-prod.deb \
-&& rm packages-microsoft-prod.deb \
-&& apt-get install -y nix-bin locales curl wget nmap nano vim msmtp msmtp-mta mutt dnsutils python3-full screen \
-irssi git testdisk tcpdump tshark traceroute busybox ncftp mc yafc ftp mosh ncat openssl sqlite3 git elinks emacs \
-python3-pip zsh python3-full python3-pip pipx rsync rclone zip unzip unar p7zip-full iperf3 mtr \
-&& rm -rf /var/lib/apt/lists/*  && localedef -i en_US -c -f UTF-8 -A /usr/share/locale/locale.alias en_US.UTF-8 \
-&& mkdir -p /home/linuxbrew/ && chmod -Rv 777 /home/linuxbrew/ && useradd -ms /usr/bin/zsh blueteam \
-&& mkdir -p /nix && chown -R blueteam:blueteam /nix
+# Install locales and basic utilities needed for parallel stages
+RUN apt-get update && \
+    apt-get install --no-install-recommends -y \
+      curl git locales nix-bin pipx wget zsh && \
+    rm -rf /var/lib/apt/lists/* && \
+    localedef -i en_US -c -f UTF-8 -A /usr/share/locale/locale.alias en_US.UTF-8
+ENV LANG=en_US.utf8
 
-# temporary workaround for missing tools because of debian 13
-RUN for tool in tftp dos2unix unix2dos ssl_client ftpget ftpput cal; do ln -s /bin/busybox /usr/local/bin/$tool; done
+# Create blueteam user and miscellaneous directories
+RUN useradd -ms /usr/bin/zsh blueteam && \
+    mkdir -p /nix/var/nix /home/linuxbrew && \
+    chown -R blueteam:blueteam /nix /home/linuxbrew
 
-RUN curl -LO "https://dl.k8s.io/release/$(curl -L -s https://dl.k8s.io/release/stable.txt)/bin/linux/amd64/kubectl" \
-&& install -o root -g root -m 0755 kubectl /usr/local/bin/kubectl
+# Grab miscellaneous non-apt utilities
+FROM base AS misc
+WORKDIR /out
 
+# kubectl, kubectx, kubens, kubectl-cnpg, devbox, direnv
+RUN curl -fsSLO "https://dl.k8s.io/release/$(curl -L -s https://dl.k8s.io/release/stable.txt)/bin/linux/amd64/kubectl" && \
+    chmod +x kubectl && \
+    curl -fsSL "https://github.com/ahmetb/kubectx/releases/download/v0.9.5/kubectx_v0.9.5_linux_x86_64.tar.gz" | \
+        tar -xz kubectx && \
+    curl -fsSL "https://github.com/ahmetb/kubectx/releases/download/v0.9.5/kubens_v0.9.5_linux_x86_64.tar.gz" | \
+        tar -xz kubens && \
+    curl -fsSL "https://github.com/cloudnative-pg/cloudnative-pg/raw/main/hack/install-cnpg-plugin.sh" | \
+        sh -s -- -b . && \
+    curl -fsSL "https://github.com/jetify-com/devbox/releases/download/0.16.0/devbox_0.16.0_linux_amd64.tar.gz" | \
+        tar -xz devbox && \
+    curl -fsSL "https://direnv.net/install.sh" | \
+        bin_path=. bash
 
+# Install Linuxbrew and build homedir
+FROM base AS home
 USER blueteam
-
 WORKDIR /home/blueteam
 
-# FROM HERE WE START WHAT THE USER SPACE LOOKS LIKE
-
 # Install nix channels and update
 RUN nix-channel --add https://nixos.org/channels/nixpkgs-unstable nixpkgs && nix-channel --update
 
-ENV LANG en_US.utf8
-RUN touch ~/.zshrc \
-&& pipx install --include-deps ansible \
-&& pipx inject --include-apps ansible argcomplete \
-&& pipx ensurepath \
-&& sh -c "$(curl -fsSL https://raw.githubusercontent.com/ohmyzsh/ohmyzsh/master/tools/install.sh)" \
-&& /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)" \
-&& echo 'eval $(/home/linuxbrew/.linuxbrew/bin/brew shellenv)' >> ~/.zshrc \
-&& echo 'export PATH="$PATH:/home/blueteam/.local/bin"' >> ~/.zshrc \
-&& echo 'eval $(/home/linuxbrew/.linuxbrew/bin/brew shellenv)' >> ~/.bashrc \
-&& echo 'export PATH="$PATH:/home/blueteam/.local/bin"' >> ~/.bashrc
-# note: https://gitee.com/chuanjiao10/kasini3000_agent_linux/raw/master/debian12_install_powershell.bash
+# Install Linuxbrew
+RUN /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
+
+# Install pipx packages and configure shells
+RUN touch ~/.zshrc && mkdir -p .local/bin && \
+    pipx install --include-deps ansible && \
+    pipx inject --include-apps ansible argcomplete && \
+    sh -c "$(curl -fsSL https://raw.githubusercontent.com/ohmyzsh/ohmyzsh/master/tools/install.sh)" && \
+    echo 'eval "$(/home/linuxbrew/.linuxbrew/bin/brew shellenv)"' >> .profile && \
+		echo 'eval "$(direnv hook bash)"' >> .bashrc && \
+		echo 'eval "$(direnv hook zsh)"' >> .zshrc
 
+# Final result
+FROM base AS final
+
+# Once Microsoft releases powershell for trixie, uncomment this and add
+# powershell to the packages below.
+#RUN source /etc/os-release && cd /run && \
+#    curl -O https://packages.microsoft.com/config/debian/${VERSION_ID}/packages-microsoft-prod.deb && \
+#    dpkg -i packages-microsoft-prod.deb
+RUN apt-get update && apt-get install -y --no-install-recommends \
+      bash-completion busybox dnsutils dos2unix elinks emacs file ftp iperf3 \
+      iputils-ping ipython3 irssi less man-db manpages mc mosh msmtp msmtp-mta \
+      mtr mutt nano ncal ncat ncftp nmap openssh-client openssl p7zip-full \
+      patch psmisc python3-cryptography python3-full python3-pip rclone rsync \
+      screen sqlite3 tcpdump testdisk tftp-hpa traceroute tshark unar unzip \
+      vim xxd yafc zip && \
+    rm -rf /var/lib/apt/lists/*
+
+RUN cd /run && \
+    curl -fsSLO "https://github.com/PowerShell/PowerShell/releases/download/v7.6.0-preview.5/powershell-preview_7.6.0-preview.5-1.deb_amd64.deb" && \
+    dpkg -i "powershell-preview_7.6.0-preview.5-1.deb_amd64.deb" && \
+    ln -s /usr/bin/pwsh{-preview,}
+
+# Add busybox symlinks for any otherwise missing tools
+RUN busybox --install
+
+COPY --from=containerssh/agent /usr/bin/containerssh-agent /usr/bin/containerssh-agent
+COPY --from=misc /out /usr/local/bin
+COPY --from=home /home /home
+COPY --from=home /nix /nix
+
+USER blueteam
+WORKDIR /home/blueteam