如何将命令行参数传递给Python Docker容器？

# sys will allow us to access the passed argumentsimport sys# sys.argv[0] access the first argument passed that is the python script nameprint("File or Script Name is :", sys.argv[0])# print arguments other than the file nameprint("Arguments passed:", end = " ")for i in range(1, len(sys.argv)):   print(sys.argv[i], end = " ")# Lowercase operation on the passed argumentsfor i in range(1, len(sys.argv)):   print(sys.argv[i].lower(), end = " ")

#python3 main.py HELLO THIS IS TUTORIALSPOINT

File or Script Name is : main.pyArguments passed: HELLO THIS IS TUTORIALSPOINThello this is tutorialspoint

FROM pythonWORKDIR /appCOPY . /app/ENTRYPOINT ["python3", "main.py"]

#docker build -t arg_py .

Sending build context to Docker daemon 8.192kBStep 1/4 : FROM python---> fa9122485d1dStep 2/4 : WORKDIR /app---> Using cache---> 9e9708fe1d43Step 3/4 : COPY . /app/---> aea9ecf32f55Step 4/4 : ENTRYPOINT ["python3", "main.py"]---> Running in 864440fa7988Removing intermediate container 864440fa7988---> d6e31e5606b8Successfully built d6e31e5606b8Successfully tagged arg_py:latest

#docker run --name mycontainer arg_py HELLO FROM TUTORIALSPOINT

File or Script Name is : main.pyArguments passed: HELLO FROM TUTORIALSPOINThello from tutorialspoint

import os#declare some variables for environment variable#os.getenv will fetch the environment variables from the container.userName = os.getenv("User_Name")passWord = os.getenv("Pass_Word")#Now print the variables that has been fetched.print("Running with user: %s" % userName)print("Your password: %s" % passWord)#Apply some operationprint(userName.upper())print(passWord.upper())

#docker build -t env_img .

Sending build context to Docker daemon 3.072kBStep 1/4 : FROM python---> fa9122485d1dStep 2/4 : WORKDIR /app---> Using cache---> 9e9708fe1d43Step 3/4 : COPY . /app/---> 31f98d53c161Step 4/4 : ENTRYPOINT ["python3", "main.py"]---> Running in bec1681a6842Removing intermediate container bec1681a6842---> 5dd89b0c7985Successfully built 5dd89b0c7985Successfully tagged env_img:latest

#docker run -e User_Name="TutorialsPoint" -e Pass_Word="secret" --name env_cont env_img

Running with user: TutorialsPointYour password: secretTUTORIALSPOINTSECRET