What is the problem that Docker solves?

Docker solves problems like: missing or incorrect application dependencies such as libraries, interpreters, code/binaries, users; Example: running a Python or Java application with the right interpreter/VM or an ‘legacy’ third party application that relies on an old glibc.

Which file should you use to create reproducible builds for Docker images?

Wiki’s and Readme files are the most common ways to document a build. While documenting a build is better than not documenting it, Wikis and Readme files have two flaws when used to describe a process: 1) they require humans to read them, and 2) they evolve.

When would you not use Docker?

Do Not Use Docker if You Prioritize Security If the security of one part is compromised, the rest of them will not be affected. However, while isolated processes in containers promise improved security, all containers share access to a single host operating system.

Is Docker good for development?

Docker is super useful for development environment because if it runs on your machine, it runs anywhere. It runs on your friend’s machine, on staging and also on production. You can test your app easily with Docker and make it run in the old version with no issues.

What’s the purpose of the From line in a Dockerfile?

The FROM line starts from a base image that gives you most of what you need, then copies your code to the image and runs a few commands to get dependencies and compile the app.

What are Docker limitations?

Docker’s disadvantages and limitations include lack of cross-platform support, performance overhead and poor support for graphical interfaces. Docker is a great tool. But Docker containers are not a cure-all.

What is Docker advantages and disadvantages?

It gives flexibility to users to take their own configuration, put that into the code, and further deploy it without any problems. However, the requirements of the infrastructure are no longer linked with the environment of the application, as Docker can be used in a wide variety of environments.

What is the limitation of a Docker container?