[refactor] clean, readable (#19)

* rebase zshrc, introduce DFS_NO_WALL

* improve ci

* improve ci

* improve ci

* update antigen url for DFS_NO_WALL

* OK

* improve ci for macos

* improve test.zsh

* staged

* fix ci

* fix ci

* use local vars

* introduce DFS_QUIET

* mass mod install.sh

* minor change

* set DFS_DEV=1 to prevent update

* debug: done -> fi

* fix DFS_DEV

* ubuntu.sh: set-mirror (ref: tuna)

* preinstall_check

* install.sh: -q to be quiet

* install.sh: -d to DFS_DEV

Co-authored-by: xiongdian.me <xiongdian.me@bytedance.com>

scripts/dogo

@@ -1,8 +1,7 @@
 #!/bin/bash
 
 THIS_DIR=$( cd "$( dirname "${BASH_SOURCE[0]:-${(%):-%x}}" )" && pwd )
-DOTFILES=${DOTFILES:-$( cd "$THIS_DIR/.." && pwd )}
-source "$DOTFILES/tools/common.sh"
+source "$THIS_DIR/../tools/common.sh"
 
 if [[ -z "$1" || "$1" =~ "-h|--help" ]]; then
     fmt_info "usage: dogo <container>"