bash – 在Vagrant上找不到来源

我在我的Vagrantfile中有以下代码,它调用下面的脚本.该脚本运行正常,直到最后一行源$dotfile.当它获取源代码时,脚本会显示source：not found.之前的行,cat $dotfile工作得很好,所以文件显然存在.

为什么这个文件在某种程度上找不到源命令,但它适用于以前的cat命令？

输出错误

==> default: /vagrant/scripts/create_functions_dotfile.sh: 14: /vagrant/scripts/create_functions_dotfile.sh: source: not found

Vagrantfile

config.vm.provision "#{script["name"]}",type: "shell" do |shell|
  shell.inline = "/bin/sh /vagrant/scripts/create_functions_dotfile.sh"
end

脚本/ create_functions_dotfile.sh

#!/bin/sh

dotfile=/home/vagrant/.functions.sh

for file in /vagrant/scripts/functions/*; do
  echo "cat $file >> $dotfile"
  cat $file >> $dotfile
done

echo "source $dotfile" >> /home/vagrant/.bashrc
cat $dotfile
source $dotfile

#!/bin/sh

#!/bin/bash

source $dotfile

. $dotfile