Spring Boot + Docker + MySQL 🔥 | Docker for Java Developers

Publicado em: 27 Maio 2026
no canal de: Selenium Express

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If you are a Java or Spring Boot developer working with microservices, then Docker is no longer optional. It has become one of the most important skills for backend developers.

In this video, we are not just learning Docker commands. We are going to understand how Docker actually works behind the scenes with a real Spring Boot + MySQL application.

Learn Docker Basics in 1 video
Learn Docker in 2 Hours 🚀 | Java & Spring Boot Dev → Docker PRO
   • Learn Docker in 2 Hours 🚀 | Java & Spring ...

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⏱ TIMESTAMPS

00:00 - Docker Intermediate Intro
00:43 - Spring Boot + MySQL in ONE Container? 🤔
04:17 - Session Goal
04:58 - Spring Boot + H2 Setup
16:41 - Dockerizing the Spring Boot App
18:29 - Writing the Dockerfile
21:24 - Building the Docker Image
22:31 - Running Spring Boot + H2 in Docker
24:21 - Enabling Remote H2 Access
25:25 - H2 vs MySQL in Docker
27:43 - Running MySQL in Docker
35:22 - Spring Boot ↔ MySQL Container Communication
46:42 - Detached & Interactive Modes (-d -it)
50:27 - MySQL Connection Successful
53:14 - Docker Port Mapping Explained
58:58 - Container to Host Communication
1:12:12 - Docker Best Practices: One Container per Service

In this session, we will learn:

✔ Dockerizing a Spring Boot application
✔ Running Spring Boot inside Docker
✔ Running MySQL inside Docker
✔ H2 Database inside Docker container
✔ Docker networking Prerequisites
✔ Docker port mapping explained
✔ Container to Host communication
✔ Why localhost stops working inside containers
✔ Docker detached mode (-d)
✔ Interactive mode (-it)
✔ Docker exec
✔ Dockerfile best practices
✔ Why “One Container Per Service” matters
✔ Why Spring Boot & MySQL should NOT run inside the same container

This is not one of those basic “hello-world” Docker tutorials.

This video is specially designed for:

Java Developers
Spring Boot Developers
Backend Developers
Microservices Developers
Developers preparing for interviews
Developers learning real-world Docker

We start with a very simple Spring Boot + H2 setup and gradually move towards MySQL containerization while understanding the biggest confusion beginners face:

👉 “Why localhost is not working inside Docker containers?”

Along the way, we also discuss:

Docker Images vs Containers
Docker Host
Host Port vs Container Port
JDBC connection inside Docker
MySQL Docker Environment Variables
Docker Architecture mindset
SOLID principle connection with containers
Single Responsibility Principle in Docker

Instead of blindly memorizing commands, we focus on understanding WHAT is actually happening behind the scenes.

🔥 Topics Covered

Docker for Java Developers
Spring Boot Docker Tutorial
Spring Boot + Docker + MySQL
Docker Networking
Docker Port Mapping
Docker Host Communication
Container Networking
Docker Compose Concepts
Dockerfile Tutorial
MySQL in Docker
Docker for Backend Developers
Docker for Microservices
Spring Boot MySQL Docker Integration
Docker Best Practices
Container to Container Communication
Docker Architecture
Docker Interview Questions
Docker Explained for Beginners

🎓 Related Courses – For reference

⚡ Reactive Java with Project Reactor
   • Reactive Programming 01 - Java Stream Vs R...

📘 Java Streams & Lambda Expressions
   • Stream API in Java : Foundation |  Java 8

🔁 Generics in Java Explained
   • From Beginner to Expert:  Why Java Generic...

🌐 Spring Boot Crash Course
   • Spring Vs Spring Boot - Why Spring Boot ? ...

▶️ Spring Boot Microservices
   • What the heck is Spring Cloud ? An Introdu...

▶️ Apache Kafka Essentials
   • Apache Kafka Tutorial for Beginners - Setu...

▶️ Spring Bootcamp (FREE)
   • Spring Framework 6 - project setup | Sprin...

▶️ Spring Live Mock Interview
   • Java interview questions and answers for e...

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