Docker deployment in Svelte - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is Docker in simple terms?

Docker is like a shipping container for software. It packages your app and everything it needs so it runs the same anywhere.

beginner

Why use Docker for deploying a Svelte app?

Docker makes sure your Svelte app runs the same on your computer and on any server, avoiding "it works on my machine" problems.

beginner

What is a Dockerfile?

A Dockerfile is a simple text file with instructions to build a Docker image. It tells Docker how to prepare your app's container.

intermediate

In Docker deployment, what is an image vs a container?

An image is a blueprint with your app and setup. A container is a running instance of that image, like a live copy.

intermediate

How do you expose your Svelte app's port in Docker?

You use the EXPOSE command in the Dockerfile and map the port when running the container with -p, so the app is reachable.

What command builds a Docker image from a Dockerfile?

A docker build

B docker run

C docker start

D docker push

The 'docker build' command reads the Dockerfile and creates an image.

Which file typically contains instructions to create a Docker image for a Svelte app?

A Dockerfile

B package.json

C svelte.config.js

D index.html

Dockerfile contains the step-by-step instructions to build the Docker image.

How do you make your Svelte app accessible outside the Docker container?

A Run npm start inside the container

B Add a script in package.json

C Use a different framework

D Use EXPOSE in Dockerfile and map ports with -p

EXPOSE declares the port, and -p maps it to the host so you can access the app.

What does the command 'docker run -p 5000:5000 my-svelte-app' do?

A Deletes the Docker image

B Runs the container and maps port 5000 inside to port 5000 outside

C Stops the running container

D Builds the Docker image

It runs the container and connects the internal port 5000 to your computer's port 5000.

Why is Docker helpful for beginners deploying Svelte apps?

A It replaces the need for HTML

B It hides all code details

C It ensures the app runs the same everywhere

D It automatically writes your app

Docker packages your app so it behaves the same on any computer or server.

Explain how you would create a Dockerfile to deploy a Svelte app.

Think about the steps to prepare and run your app inside a container.

Describe the difference between a Docker image and a Docker container in your own words.

Compare it to a cake recipe versus a baked cake.