Author: Zen and the Art of Computer Programming
Today, as the microservice architecture becomes more and more popular, container technology has become one of the important tools for building and deploying applications. Containerized applications can provide cross-platform, portability and elasticity, and are the main means for developers to quickly deliver and iterate new functions. In container technology, Docker is an open source project that provides a lightweight virtualization environment. By utilizing Dockerfile files, applications can be built, run and shared within containers. Spring Boot is a lightweight framework for creating standalone Spring-based applications. Because Docker and Spring Boot can be integrated very easily, making them the best tools for building and deploying microservice architectures. Therefore, this article will discuss in detail how to combine these two frameworks to build microservices in practical scenarios.
2. Explanation of basic concepts and terms
2.1 Docker
Docker is an open source engine that allows developers to package their applications and dependencies into a lightweight, portable container, and then publish it to any popular Linux or Windows system. The container is a completely isolated environment and can work in the background process, isolated from the external environment.
2.2 Dockerfile
A Dockerfile is a build file for a docker image. Normally, users need to create a Dockerfile to define how to build the image and tell Docker which base image should start and execute instructions.
2.3 Docker Compose
Compose is one of Docker's official Orchestration projects. Its role is to define and run multi-container Docker applications. Compose configures what resources the application needs through a YAML file, and generates the correct commands to implement the desired state. Compose can manage multiple