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Building the first image Docker based on NodeJS app

For this basic project, we will use NodeJS application to deploy a message on the browser exposing the port to stay visible for us.

Installation

This installation is based on LINUX Ubuntu, in this case to install please follow the steps below:

$ apt install nodejs -y

Usage

Ensure you have executed the application locally using the command below:

$ node app.js

After this, please check on your web browser the address http://192.168.1.100:3000/. You can able to see the message Olá MUNDO! in portuguese.

Build a Docker image using the nodejs image

Now we can create a Dockerfile to deploy the Docker image:

FROM node
WORKDIR /src
COPY package*.json ./
RUN npm install
COPY . .
EXPOSE 3000
CMD ["node", "app.js"]
  • After this step, please proceed wth the command below:
$ docker image build -t amauryborgesouza/nginx-apps:v1 .
  • Check if the image is listed:
$ docker image ls
REPOSITORY                    TAG       IMAGE ID       CREATED         SIZE
amauryborgesouza/nginx-apps   v1        a3f7a1b38eed   5 seconds ago   999MB
  • Now you can able to run the container:
$ docker container run -d -p 3000:3000 amauryborgesouza/nginx-apps:v1
  • Push the image you have created to Dockerhub:
$ docker push  amauryborgesouza/nginx-apps:v1
The push refers to repository [docker.io/amauryborgesouza/nginx-apps]
b4f3dcccf053: Pushed
7bc1a6ddfb60: Pushed
ab068f044e12: Pushed
40593d78553b: Pushed
55e375d8b397: Mounted from library/node
b72a59a07ced: Mounted from library/node
784fcc2e440c: Mounted from library/node
884b130cf8e9: Mounted from library/node
204e42b3d47b: Mounted from library/node
613ab28cf833: Mounted from library/node
bed676ceab7a: Mounted from library/node
6398d5cccd2c: Mounted from library/node
0b0f2f2f5279: Mounted from library/node
v1: digest: sha256:fd856df411a18a0c9a13e894163b66d7575d31dcab3ea7e7e10748383c7492b5 size: 3051

Contributing

Pull requests are welcome. For major changes, please open an issue first to discuss what you would like to change.

Please make sure to update tests as appropriate.

License

GNU General Public License v3.0