Docker学习笔记：Alpine镜像+Python3安装+http服务器

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1. 编写Dockerfile文件使用最新的Alpine镜像并安装Python3环境，如下：
   因为python高于3.4则不会默认安装pip，需要手动安装。
   试了很多其他办法都没安装上，唯有下载get-pip.py进行安装。
   这里说一下cherrypy版本不能高于9.0.0，负责等下import wsgiserver会出错，因为wsgiserver后面移出cherrypy了。

FROM alpine
RUN mkdir /install
COPY get-pip.py /install
RUN apk update
RUN apk add bash
RUN apk add python3
RUN python3 /install/get-pip.py
RUN pip install bottle
#RUN pip3 install cherrypy
RUN pip3 install "cherrypy>=3.0.8,<9.0.0"
ADD server.py /root/server.py
EXPOSE 8080:8080
CMD /usr/bin/python3 /root/server.py

2. 在Dockerfile文件目录下执行下面命令可以创建基于python3的镜像：

$ docker build -t test_python38_http .

3. 这样基于alpine的python3镜像创建成功了，用下面命令可以查看：

$ docker images

4. 镜像创建成功后输入命令则可以启动镜像服务了

$ docker run -p 8080:8080 -it test_python38_http 

5. 最后打开浏览器，输入url测试：

http://192.168.99.100:8080/HTTP_SET_COOKIE_LIST_3

关于这个IP也是一个坑，大家可以在启动Docker时看到一个default IP，并不是其他的哦。

6. 最后贴上http代码

import bottle
from bottle import post, get, delete, route, request
from cherrypy import wsgiserver
import time
import signal

@route('/HTTP_SET_COOKIE_LIST_3')
def set_cookie():
    print("VA_HTTP HTTP_SET_COOKIE_LIST_3")
    count = int( bottle.request.cookies.get('counter', '0') )
    count += 1
    bottle.response.set_cookie('counter', str(count))
    bottle.response.status = 200
    bottle.response.content_type = 'text/plain; charset=utf-8'
    return "200 HTTP_SET_COOKIE_LIST_3"

@route('/HTTP_SET_COOKIE_LIST_4')
def verify_cookie():
    count = int( bottle.request.cookies.get('counter', '0') )
    if count == 0 :
        bottle.response.status = 400
        bottle.response.content_type = 'text/plain; charset=utf-8'
        return "400 HTTP_SET_COOKIE_LIST_4"
    else :
        bottle.response.status = 200
        bottle.response.content_type = 'text/plain; charset=utf-8'
        return "200 HTTP_SET_COOKIE_LIST_4"
    	
@route('/<id>')
def HttpRoute_handle(id):
    bottle.response.status = 200
    bottle.response.content_type = 'text/plain; charset=utf-8'
    return "200 "+ id

@route('/HTTP_TIMEOUT')
def HttpTime_handle():
    time.sleep(30)
    bottle.response.status = 200
    bottle.response.content_type = 'text/plain; charset=utf-8'
    return "200 TIME"


#Get for Test HTTP_DO_REQUEST_1, HTTP_SET_POST_DATA_5, HTTP_SET_METHOD_3
@get('/<id>')
def HttpGet_handler(id):
    if id == "HTTP_SET_METHOD_3":
        bottle.response.status = 200
        bottle.response.content_type = 'text/plain; charset=utf-8'
        return "200 GET"
    elif (id == "HTTP_SET_HEADER_2_0") or (id == "HTTP_SET_HEADER_2_1") or (id == "HTTP_SET_HEADER_2_2"):
        if(request.headers.get('FirstHeader') == 'value') and not(request.headers.get('SecondHeader')) and (id == "HTTP_SET_HEADER_2_0"):
            bottle.response.status = 200
            bottle.response.content_type = 'text/plain; charset=utf-8'
            return "200 HTTP_SET_HEADER_2 " + "FirstHeader"
        elif (request.headers.get('FirstHeader') == 'value') and (request.headers.get('SecondHeader') == 'value') and (id == "HTTP_SET_HEADER_2_1"):
            bottle.response.status = 200
            bottle.response.content_type = 'text/plain; charset=utf-8'
            return "200 HTTP_SET_HEADER_2 " + "FirstHeader" + "SecondHeader"
        elif not(request.headers.get('FirstHeader')) and not(request.headers.get('SecondHeader')) and( id == "HTTP_SET_HEADER_2_2"):
            bottle.response.status = 200
            bottle.response.content_type = 'text/plain; charset=utf-8'
            return "200 HTTP_SET_HEADER_2 "
        else: 
            bottle.response.status = 400
            bottle.response.content_type = 'text/plain; charset=utf-8'
            return "400 HTTP_SET_HEADER_2"
    else:    
        bottle.response.status = 200
        bottle.response.content_type = 'text/plain; charset=utf-8'
        return "200 "+ id

#Post for Test : HTTP_SET_POST_DATA_3, HTTP_SET_POST_DATA_4, HTTP_SET_POST_DATA_5, HTTP_SET_METHOD_3
@post('/<id>')
def HttpSetPostData_handler(id):
    if id == "HTTP_SET_POST_DATA_5" :
        bottle.response.status = 400
        bottle.response.content_type = 'text/plain; charset=utf-8'
        return "400 " + id
    elif id == "HTTP_SET_METHOD_3":
        Data = bottle.request.forms.get('data')
        Cata = bottle.request.forms.get('cata')
        if Data:
            bottle.response.status = 200
            bottle.response.content_type = 'text/plain; charset=utf-8'
            return "200 POST " + "data=" + Data
        elif Cata:
            bottle.response.status = 200
            bottle.response.content_type = 'text/plain; charset=utf-8'
            return "200 POST " + "cata=" + Cata
        else:
            bottle.response.status = 400
            bottle.response.content_type = 'text/plain; charset=utf-8'
            return "400 " + id
    else:
        testName = bottle.request.forms.get('testname')
        if testName == "HTTP_SET_POST_DATA_4": 
            bottle.response.status = 200
            bottle.response.content_type = 'text/plain; charset=utf-8'
            return "200 " + id
        elif testName == id:
            #HTTP_SET_POST_DATA_3
            bottle.response.status = 200
            bottle.response.content_type = 'text/plain; charset=utf-8'
            return "200 " + testName
        else : 
            bottle.response.status = 400
            bottle.response.content_type = 'text/plain; charset=utf-8'
            return "400 " + id

def stop_server(*args, **kwargs):
    server.stop()

app = bottle.default_app()
server = wsgiserver.CherryPyWSGIServer(("0.0.0.0", 8080), app)
signal.signal(signal.SIGINT, stop_server)
signal.signal(signal.SIGTERM, stop_server)
signal.signal(signal.SIGHUP, stop_server)
print("VA_HTTP TestSuite Server Started")
server.start()

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