add check for existing fzf #205

	# Reference:
	# - [ようこそdotfilesの世界へ \#Vim - Qiita](https://qiita.com/yutkat/items/c6c7584d9795799ee164)
	# - [dotfilesのすゝめ \| kouki’s blog](https://blog.kmdkuk.com/2022/07/16/dotfilesのすゝめ.html)
	# - [GitHub Actionsを使って、自分用にカスタムしたArch LinuxのISOイメージを作る](https://zenn.dev/inkohx/articles/3dbe67c0db1322)
	# - [コンテナ内でのジョブの実行 - GitHub Docs](https://docs.github.com/ja/actions/using-jobs/running-jobs-in-a-container)
	name: CI

	on: push

	jobs:
	setup-ubuntu:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- name: Setup dotfiles
	run: bash setup/linux/setup.sh

	setup-ubuntu-plane:
	runs-on: ubuntu-latest
	container: ubuntu:latest
	steps:
	- name: Install sudo
	run: \|
	apt-get update && apt-get upgrade -y
	apt-get install -y sudo
	- name: Install required packages
	run: \|
	sudo apt-get update && sudo apt-get upgrade -y
	sudo apt-get install -y curl git
	- name: Setup dotfiles
	run: curl -fsSL https://raw.githubusercontent.com/kenkenpa198/dotfiles/main/setup/linux/setup.sh \| bash

	setup-archlinux:
	runs-on: ubuntu-latest
	container: archlinux:base
	steps:
	- name: Install sudo
	run: \|
	pacman -Syu --noconfirm
	pacman -S --noconfirm sudo
	- name: Install required packages
	run: \|
	sudo pacman -Syu --noconfirm
	sudo pacman -S --noconfirm curl git
	- name: Setup dotfiles
	run: curl -fsSL https://raw.githubusercontent.com/kenkenpa198/dotfiles/main/setup/linux/setup.sh \| bash

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