Use git credential manager in Ubuntu Server (#237)

* use `git-credential-manager` in Ubuntu Server

* add test

home/.chezmoiscripts/ubuntu/run_once_12-git-credential-manager.sh.tmpl

@@ -0,0 +1,7 @@
+{{ if eq .chezmoi.os "linux" -}}
+{{   if eq .chezmoi.osRelease.idLike "debian" -}}
+{{     if eq .system "server" -}}
+{{       include "../install/ubuntu/server/git_credential_manager.sh" }}
+{{     end -}}
+{{   end -}}
+{{ end -}}

home/dot_config/git/config.tmpl

@@ -2,26 +2,23 @@
 	name = Shunsuke KITADA
 	email = {{ .email | quote }}
 	signingkey = D55D775A7951407C
-
 [color]
 	ui = auto
-
 [url "git@github.com:"]
 	pushinsteadof = https://github.com/
-
 [pager]
 	branch = cat
 	config = cat
-
 [ghq]
 	root = ~/.local/share
 	root = ~/ghq
-
 [commit]
 	gpgsign = true
-
 [pull]
 	rebase = false
-
 [core]
 	quotepath = false
+{{ if eq .chezmoi.os "linux" -}}
+[credential]
+	credentialStore = cache
+{{ end -}}

install/ubuntu/server/git_credential_manager.sh

@@ -0,0 +1,29 @@
+#!/usr/bin/env bash
+
+set -Eeuo pipefail
+
+if [ "${DOTFILES_DEBUG:-}" ]; then
+    set -x
+fi
+
+function install_git_credential_manager() {
+    local gcm_version="2.6.0"
+    local gcm_deb="gcm-linux_amd64.${gcm_version}.deb"
+    wget "https://github.com/git-ecosystem/git-credential-manager/releases/download/v${gcm_version}/${gcm_deb}"
+    sudo dpkg -i ${gcm_deb}
+    rm -v ${gcm_deb}
+    git-credential-manager configure
+}
+
+function uninstall_git_credential_manager() {
+    git-credential-manager unconfigure
+    sudo dpkg -r gcm
+}
+
+function main() {
+    install_git_credential_manager
+}
+
+if [[ "${BASH_SOURCE[0]}" == "${0}" ]]; then
+    main
+fi

tests/install/ubuntu/server/git_credential_manager.bats

@@ -0,0 +1,17 @@
+#!/usr/bin/env bats
+
+readonly SCRIPT_PATH="./install/ubuntu/server/git_credential_manager.sh"
+
+function setup() {
+    source "${SCRIPT_PATH}"
+}
+
+function teardown() {
+    run uninstall_git_credential_manager
+}
+
+@test "[ubuntu-server] starship" {
+    DOTFILES_DEBUG=1 bash "${SCRIPT_PATH}"
+
+    [ -x "$(command -v git-credential-manager)" ]
+}