What are Docker ADD/COPY instructions and when should you use them? We explain the differences between the ADD and COPY instructions in Dockerfiles, including when to use each based on security, functionality, and build context.

Docker offers insights into container technology, microservices architecture, and application deployment, providing documentation and best practices for building, deploying, and managing containerized applications. By exploring Docker's curated content, developers can learn about container orchestration, Docker Swarm, and Docker Compose for managing complex containerized environments. Whether you're deploying microservices, building CI/CD pipelines, or optimizing your development workflow, Docker offers resources to streamline your containerization journey and unlock the benefits of container-based deployment.

Docker

This post explains the differences between the ADD and COPY instructions in Dockerfiles. It emphasizes the general recommendation to use COPY due to its simplicity and security, while highlighting scenarios where ADD might be beneficial due to its extended functionalities, such as handling URLs and unpacking archives. It also covers how these instructions operate in various build contexts, including local files, Git repositories, and OCI images, along with the associated security implications.

Docker Best Practices: Understanding the Differences Between ADD and COPY Instructions in Dockerfiles