~ ~ ~ 完全沒想過可以撐完 1/3 的路程 ~ ~ ~

今天，我們就來簡單的撰寫一份 Dockerfile 吧 !

首先，建立存放 Dockerfile 的資料夾

jiahong@ubuntu:~$ mkdir Dockerfile
jiahong@ubuntu:~$ ls
Dockerfile
jiahong@ubuntu:~$ cd Dockerfile/
jiahong@ubuntu:~/Dockerfile$

撰寫 Dockerfile 檔案

FROM ubuntu:16.04

MAINTAINER jiahong

RUN apt-get update -y \
&&  apt-get install nginx -y

EXPOSE 8080

CMD ["nginx", "-g", "daemon off;"]

然後在此資料夾底下 build Dockerfile

root@ubuntu:~/Dockerfile# docker build -t nginx-build  .
Sending build context to Docker daemon  2.048kB
Step 1/5 : FROM ubuntu:16.04
 ---> 00fd29ccc6f1
Step 2/5 : MAINTAINER jiahong
 ---> Using cache
 ---> 8055eef138ab
Step 3/5 : RUN apt-get update -y &&  apt-get install nginx -y
 ---> Using cache
 ---> 6e012b0ec790
Step 4/5 : EXPOSE 8080
 ---> Using cache
 ---> 057166eb2723
Step 5/5 : CMD nginx -g daemon off;
 ---> Running in e7a4d85552ed
 ---> f572a21fe40e
Removing intermediate container e7a4d85552ed
Successfully built f572a21fe40e
Successfully tagged nginx-build:latest

• -t 是為了給這個 Image 一個 Tag

執行 Container 並觀看 Container 是否被正確啟動

root@ubuntu:~/Dockerfile# docker run -itd  --name nginx -p 8080:80 nginx-build
b8f85bfbde678429a1bf13666b3520527f275e84e677bb5fbf8935f09d93176e
root@ubuntu:~/Dockerfile# docker ps -a
CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS                  NAMES
b8f85bfbde67        nginx-build         "nginx -g 'daemon ..."   4 seconds ago       Up 3 seconds        0.0.0.0:8080->80/tcp   nginx

這樣打

http://localhost:8080

就有 nginx 的預設頁面了

那今天就先到這吧 ~