added dev container; changed image to alpine/mysql on cron backup

.devcontainer/scripts/postCreate.sh

@@ -0,0 +1,11 @@
+#!/bin/zsh
+
+#setup chroma for zsh colorize
+mkdir -p ~/lib
+curl -Lo ~/lib/chroma https://github.com/alecthomas/chroma/releases/latest/download/chroma-linux-amd64
+chmod +x ~/lib/chroma
+
+git clone https://github.com/zdharma-continuum/fast-syntax-highlighting.git ~/.oh-my-zsh/custom/plugins/fast-syntax-highlighting
+git clone https://github.com/zsh-users/zsh-autosuggestions ~/.oh-my-zsh/custom/plugins/zsh-autosuggestions
+
+