Docker for Beginners (Part5) : Complete Dockerfile Tutorial

Pubblicato il: 25 maggio 2026
sul canale di: Sarvin Style Coding

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In this video, we learn how to Dockerize a real React.js application completely step by step by writing a Dockerfile from scratch.

You will learn:

How Docker images work
How to write Dockerfiles
How to choose the right base image
How to use Docker instructions like FROM, WORKDIR, COPY, ADD, RUN, CMD, ENV, and USER
How Docker layers and caching work
How to optimize Docker build speed
How to reduce Docker image size using .dockerignore
How to build and run Docker containers

By the end of this tutorial, you will understand the real workflow of Dockerizing applications and you’ll be able to apply these concepts to your own projects.

Technologies used in this tutorial:

Docker
React.js
Node.js
Alpine Linux

📌 Full Docker Course Playlist:

• Docker Full Course for Beginners to Advanc...

⏱️ Timestamps
00:00 Intro
02:40 Base Image
10:12 COPY project files
12:13 WORKDIR
14:10 ADD
18:02 .dockerignore
20:00 RUN
21:27 CMD
22:37 ENTRYPOINT
24:05 ENV
25:54 USERS
32:19 Optimizing

Next video:
Dockerizing the Node.js backend and running all services together using Docker Compose.

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