Add doom emacs default configuration in dev environment.

Author: Graham Greenfield

dev_env/Dockerfile

@@ -8,7 +8,6 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
     git \
     nano \
     tig \
-    tree \
     emacs \
     netcat \
     python3 \
@@ -23,8 +22,8 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
     net-tools \
  && rm -rf /var/lib/apt/lists/*
 
-# 2) (Optional) Install Node.js LTS via official repo (instead of distro version)
-#    Uncomment if you prefer a different Node.js version. For example:
+# 2) (Optional) Install Node.js LTS via official repo if you need a specific Node version
+#    Uncomment if you prefer a different Node.js version:
 # RUN curl -fsSL https://deb.nodesource.com/setup_18.x | bash - \
 #     && apt-get install -y nodejs \
 #     && rm -rf /var/lib/apt/lists/*
@@ -33,14 +32,27 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
 #    See official docs: https://www.lunarvim.org/docs/installation
 RUN bash -c "$(curl -s https://raw.githubusercontent.com/lunarvim/lunarvim/master/utils/installer/install.sh)"
 
-# 4) Create non-root user for development
+# 4) Install Doom Emacs
+#    See official docs: https://github.com/doomemacs/doomemacs
+RUN git clone --depth 1 https://github.com/doomemacs/doomemacs ~/.emacs.d \
+    && ~/.emacs.d/bin/doom install --force
+
+# 5) Create a non-root user for development
 RUN useradd -ms /bin/bash devuser
+
+# 6) Switch to devuser
 USER devuser
 WORKDIR /home/devuser
 
-# 5) Because LunarVim was installed as root, ensure lvim is accessible to devuser:
+# 7) Because LunarVim was installed as root, ensure lvim is accessible to devuser
 RUN ln -s /root/.local/bin/lvim /usr/local/bin/lvim || true
 
-# 6) Add any extra steps or configuration here
+# 8) Provide a convenient symlink for doom as well (if needed)
+RUN ln -s /root/.emacs.d/bin/doom /usr/local/bin/doom || true
+
+# 9) (Optional) You might want to move Doom’s config to devuser’s home directory
+#    You can do something like:
+# RUN mkdir -p ~/.config/emacs && cp -r /root/.doom.d ~/.doom.d
+#    Then run doom sync. But typically you might copy your own .doom.d config from your local dev machine.
 
 CMD ["/bin/bash"]