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vinayak

Posted on • Originally published at itsvinayak.hashnode.dev on

Dockerizing Python Application

#python #docker #coding #software

Docker provides the capability to package and run an application in a loosely isolated environment called a container. It is an open platform for developing, shipping, and running applications.

In this article, we will demonstrate, how to dockerize a python flask app. For this purpose, we will use our blockchain project.

Get the Application

For running Application we need to follow certain step :

  • clone the repository from github 
git clone https://github.com/itsvinayak/blockchain.git
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  • View the contents of the cloned repository ๐Ÿ—‚

Installing Docker in Ubuntu (linux) 

sudo apt-get update -y


sudo apt-get install \
    ca-certificates \
    curl \
    gnupg \
    lsb-release -y
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Adding gpg " GnuPrivacy Guard" key 

sudo curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg
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Adding APT Sources 

sudo echo \
  "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/ubuntu \
  $(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null


sudo apt-get update -y && sudo apt-get install docker-ce docker-ce-cli containerd.io -y
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Starting docker 

systemctl start docker
systemctl enable docker
docker --version
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Writing Docker File

In this project, We will create a docker file with name Dockerfile.

FROM python
LABEL maintainer="vinayak"
LABEL version="1.0"
LABEL description="This is a blockchain implementation in python"
LABEL website="https://github.com/itsvinayak/blockchain"
LABEL email="itssvinayak@gmail.com"
COPY . /app
WORKDIR /app
RUN pip install -r requirements.txt
EXPOSE 8080 
CMD ["python", "server.py"]
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Building Docker Image 

sudo docker build --tag blockchain .
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Here --tag name and optionally a tag in the 'name:tag' format.

Running Docker Image

Listing all images 

sudo docker image ls
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sudo docker run -d -p 8080:8080 blockchain
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Server in now running at proof at port 8080.

Stopping docker image

listing running docker container 

sudo docker container ls
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Stopping running container 

sudo docker container stop a2115d1010b5
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Where a2115d1010b5 is running container id

All codes with docker files are present on GitHub

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