Dockerize Spring Boot Application (Multi-Stage Build)
Learn how to Dockerize Spring Boot applications using Multi-Stage Builds to reduce image size, optimize performance, and configure MySQL networking.
In this comprehensive tutorial, we demonstrate the end-to-end process of creating a production-ready Docker image for a Java Spring Boot application. We move beyond basic setups to implement a Multi-Stage Build strategy, significantly reducing the final artifact size by separating the build environment (JDK) from the runtime environment (JRE).
Furthermore, this video addresses a critical challenge in container orchestration: establishing communication between a Spring Boot container and a MySQL database container. You will learn how to configure Docker Bridge Networks and utilize Environment Variables to ensure seamless connectivity between services.
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Chapters:
00:00 Intro
01:47 Project Overview
04:20 Configuring Environment Variables
06:09 Creating the Dockerfile
07:18 Stage 1: Download Dependencies
10:07 Stage 2: Build the Application
11:05 Stage 3: Run the Application
13:21 Building & Versioning the Image
15:49 Running the container
16:25 Common Error: Why Localhost Fails
17:24 Setting up Docker Networks
19:10 Running the Container (Passing Env Variables)
20:20 Testing the API
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