디바이스에 저장된 이미지와 입력 문자 가져와서 글 올리기

image.network와 image.file의 차이

[
{id: 3, 
image: File: '/data/user/0/com.example.instagram/cache/image_picker154845455350204097.jpg',
likes: 5, date: July 25, content: asdsdd, liked: false, user: John Kim}

{id: 0, image: https://codingapple1.github.io/app/img0.jpg, 
likes: 5, date: July 25, content: 등을 대라 등대, liked: false, user: John Kim}
]