Split up configuration

config/zsh/oh-my-zsh-custom/powerlevel9k/docker/zgen/Dockerfile

@@ -0,0 +1,8 @@
+ARG base
+FROM p9k:${base}
+
+COPY docker/zgen/install.zsh /tmp/
+RUN zsh /tmp/install.zsh
+
+COPY ./ p9k/
+COPY docker/zgen/zshrc .zshrc

config/zsh/oh-my-zsh-custom/powerlevel9k/docker/zgen/install.zsh

@@ -0,0 +1,5 @@
+#!/bin/zsh
+
+git clone https://github.com/tarjoilija/zgen.git "${HOME}/.zgen"
+
+# EOF

config/zsh/oh-my-zsh-custom/powerlevel9k/docker/zgen/zshrc

@@ -0,0 +1,10 @@
+# load zgen
+source ~/.zgen/zgen.zsh
+
+# if the init scipt doesn't exist
+if ! zgen saved; then
+  zgen load ~/p9k/powerlevel9k.zsh-theme
+
+  # generate the init script from plugins above
+  zgen save
+fi