dockerfile.md

Dockerfile

Create a directory to hold application files. The docker build process will pull everything in the directory when it creates the image. Move the scripts and files for the containerized application into the directory.

First build a dockerfile to your application for ex.

{% code title="Dockerfile" %}

FROM node:alpine

WORKDIR /usr/src/app

COPY package* ./

RUN npm install

COPY . .

EXPOSE 3000

CMD ["node", "index.js"]

{% endcode %}

Build the docker image

sudo docker build -t simpleapp:1.0

Verify the image

sudo docker images

Run the image

sudo docker run simpleapp:1.0

Push the image in dockerhub with tag

sudo docker push myusername/simpleapp:1.0