Update dev container build, incl. dotfiles and cache-bust

.devcontainer/Dockerfile

@@ -1,26 +1,72 @@
+#FROM node:25
+#FROM node:alpine AS development
 FROM node:18
 
+# Update apt cache
+RUN apt-get update
+RUN apt-get install -y
+
+# Set locale to en_US.UTF-8
+ENV LANG=en_US.UTF-8
+RUN apt-get install -y locales && \
+    sed -i -e "s/# $LANG.*/$LANG UTF-8/" /etc/locale.gen && \
+    dpkg-reconfigure --frontend=noninteractive locales && \
+    update-locale LANG=$LANG
+    # locale-gen en_US.UTF-8
+
 # Install some apt packages
-RUN apt-get update && apt-get install -y sudo zsh git vim tmux lsof
+RUN apt-get install -y sudo zsh git vim bat tmux jq lsof gawk
+
+# Cache busting argument to force re-builds of following steps (e.g. to get latest dotfiles)
+ARG CACHE_BUST=1
+# For this to be effictive set `"runArgs": ["--build-arg", "CACHE_BUST=$(date +%s)"]` in devcontainer.json
 
 # Variable for default user `node` to be used in the following steps
 ARG USERNAME=node
 
-# Ensure basic setup of default `node` user
+# Set zsh as default shell for `USERNAME`
+RUN chsh -s /bin/zsh $USERNAME
+
+# Ensure basic setup of default user `$USERNAME`
 # Not needed since node:18 already comes with a node user
 #RUN useradd -ms /bin/zsh $USERNAME \
 #    && chown -R node:node /home/$USERNAME
 
-# Set zsh as default shell for node user
-RUN chsh -s /bin/zsh node
-
-# Ensure `node` user has access to `sudo`
+# Ensure user `$USERNAME` has full access to `sudo`
 RUN mkdir -p /etc/sudoers.d \
     && echo $USERNAME ALL=\(root\) NOPASSWD:ALL > /etc/sudoers.d/$USERNAME \
     && chmod 0440 /etc/sudoers.d/$USERNAME
 
-# Set working directory
-WORKDIR /workspace
-
-# Use non-root user
+# From now on continue as user `$USERNAME` in user's home directory
 USER $USERNAME
+WORKDIR ~/
+
+# Set zsh as default shell for node user and install zsh-in-docker (ohmyzsh, Powerlevel10k, etc.)
+# TODO review plugins, some may not even work without appropriate setup
+# TODO consider using dotfiles repo instead (requires: zplug install)
+#RUN echo "skip_global_compinit=1" | su - $USERNAME -c tee -a /home/$USERNAME/.zshenv
+
+# Install zplug
+#RUN curl -sL --proto-redir -all,https https://raw.githubusercontent.com/zplug/installer/master/installer.zsh | zsh
+
+# Clone dotfiles to `/home/$USERNAME/dotfiles` and create all symlinks
+RUN git clone https://github.com/cbaoth/dotfiles ~/dotfiles; ~/dotfiles/link.sh; touch ~/.zplug-force-install
+
+# Start zsh one time with dotfiles to setup stuff (e.g. install zplug and plugins)
+RUN zsh -ic true
+#RUN ["zsh", "-ic", "source ~/.zplug/init.zsh; "]
+#RUN ["zsh", "-ic", "zplug install"]
+
+# COPY .zshenv .zshrc /home/$USERNAME/
+# RUN chown $USERNAME:$USERNAME /home/$USERNAME/.zshenv /home/$USERNAME/.zshrc
+# RUN su - $USERNAME sh -c "$(wget -O- https://github.com/deluan/zsh-in-docker/releases/download/v1.2.1/zsh-in-docker.sh)" -- \
+#        -p git \
+#        -p git-extras \
+#        -p gitfast \
+#        -p ssh-agent \
+
+ARG CACHE_BUST=0
+
+# From now on continue as user `$USERNAME` in dev container working directory
+USER $USERNAME
+WORKDIR /workspace