1.創(chuàng)建空目錄
$ cd /home/xm6f/dev
$ mkdir myapp
$ cd myapp/
2.vim Dockerfile，內(nèi)容如下：
## 一個(gè)基礎(chǔ)的 python 運(yùn)行環(huán)境
FROM python
## 設(shè)置工作目錄
WORKDIR /app
## 將當(dāng)前系統(tǒng)文件夾內(nèi)容復(fù)制到容器的 app 目錄
ADD . /app
## 安裝必要的依賴包
RUN pip install -r softwares.txt
## 開(kāi)放端口，供容器外訪問(wèn)
EXPOSE 80
EXPOSE 3088
EXPOSE 8080
EXPOSE 8066
## 定義環(huán)境變量
ENV NAME HELLO
## 運(yùn)行命令
CMD ["python","app.py"]
3.安裝依賴
vim softwares.txt，內(nèi)容如下：
4.vim app.py，內(nèi)容如下：
from flask import Flask
from redis import Redis, RedisError
import os
import socket
# Connect to Redis
redis = Redis(host="redis", db=0, socket_connect_timeout=2, socket_timeout=2)
app = Flask(__name__)
@app.route("/")
def hello():
try:
visits = redis.incr("counter")
except RedisError:
visits = "<i>cannot connect to Redis, counter disabled</i>"
html = "<h3>Hello {name}!</h3>" \
"<b>Hostname:</b> {hostname}<br/>" \
"<b>Visits:</b> {visits}"
return html.format(name=os.getenv("NAME", "world"), hostname=socket.gethostname(), visits=visits)
if __name__ == "__main__":
app.run(host='0.0.0.0', port=80)
5.編譯
$ docker build -t myfirstapp .
6.查看新生成了一個(gè)image
$ docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
myfirstapp latest 01ea1129a831 2 hours ago 699MB
7.啟動(dòng)image
$ docker run -p 4000:80 myfirstapp
也可以放在后臺(tái)運(yùn)行:
$ docker run -d -p 4000:80 myfirstapp
8.訪問(wèn)服務(wù)
# curl http://localhost:4000
<h3>Hello world!</h3><b>Hostname:</b> a6655d0d7e74<br/><b>Visits:</b> <i>cannot connect to Redis, counter disabled</i>
或者瀏覽器訪問(wèn)服務(wù)：http://192.168.1.160:4000
9.查看當(dāng)前運(yùn)行的鏡像
$ docker ps
CONTAINER ID MAGE COMMAND CREATED STATUS PORTS NAMES
2db45cab2bb4 myfirstapp "python app.py" 2 minutes ago Up 2 minutes 0.0.0.0:4000->80/tcp elastic_wilson
10.停止鏡像
$ docker stop 2db45cab2bb4
以上就是本文的全部?jī)?nèi)容，希望對(duì)大家的學(xué)習(xí)有所幫助，也希望大家多多支持腳本之家。
