Featured resource
2025 Tech Upskilling Playbook
Tech Upskilling Playbook

Build future-ready tech teams and hit key business milestones with seven proven plays from industry leaders.

Check it out
  • Lab
    • Libraries: If you want this lab, consider one of these libraries.
    • Cloud
Google Cloud Platform icon
Labs

Creating Images Using a Dockerfile

You’ve decided to Dockerize your weather-app. Before you can do this, you'll need to create an image for it. And you'll want to keep the image small, so you will create it using a multi-stage build. Using instructions in a Dockerfile, build the image, then test it by creating a container that uses it.

Google Cloud Platform icon
Lab platform
Lab Info
Level
Intermediate
Last updated
Sep 15, 2025
Duration
1h 0m

Contact sales

By filling out this form and clicking submit, you acknowledge our privacy policy.
Table of Contents
  1. Challenge

    Create a docker file

    Create a docker file:

    vi Dockerfile
    

    Dockerfile contents:

    FROM node AS source
    RUN mkdir -p /node/weather-app
    ADD src/ /node/weather-app
    WORKDIR /node/weather-app
    RUN npm install
    
    FROM node:alpine
    ARG APP_VERSION=V1.1
    LABEL org.label-schema.version=$APP_VERSION
    ENV NODE_ENV="production"
    COPY --from=source /node/weather-app /node/weather-app
    WORKDIR /node/weather-app
    EXPOSE 3000
    ENTRYPOINT ["./bin/www"]
    
  2. Challenge

    Build the image

    Use Git commit hash as the image tag:

    cd src
    git log -1 --pretty=%H
    cd ../
    

    Build the image:

    sudo docker image build -t linuxacademy/weather-app:[HASH] --build-arg APP_VERSION=2.0 .
    
  3. Challenge

    Deploy a test container using the image just created

    Create the weather-app container:

    sudo docker container run -d --name weather-app -p 8080:3000 linuxacademy/weather-app:<HASH>
    
About the author

Pluralsight Skills gives leaders confidence they have the skills needed to execute technology strategy. Technology teams can benchmark expertise across roles, speed up release cycles and build reliable, secure products. By leveraging our expert content, skill assessments and one-of-a-kind analytics, keep up with the pace of change, put the right people on the right projects and boost productivity. It's the most effective path to developing tech skills at scale.

Real skill practice before real-world application

Hands-on Labs are real environments created by industry experts to help you learn. These environments help you gain knowledge and experience, practice without compromising your system, test without risk, destroy without fear, and let you learn from your mistakes. Hands-on Labs: practice your skills before delivering in the real world.

Learn by doing

Engage hands-on with the tools and technologies you’re learning. You pick the skill, we provide the credentials and environment.

Follow your guide

All labs have detailed instructions and objectives, guiding you through the learning process and ensuring you understand every step.

Turn time into mastery

On average, you retain 75% more of your learning if you take time to practice. Hands-on labs set you up for success to make those skills stick.

Get started with Pluralsight