Have you configured virtual environments on your own in practice?

Yes, I have practical experience configuring virtual environments, for example, using tools such as VirtualBox, VMware, as well as Docker containers.

When setting up a virtual machine, the following steps are usually performed:

• Choosing and installing a hypervisor (VirtualBox, VMware).
• Creating a new virtual machine with specified parameters (RAM, CPU, disk space).
• Installing an operating system inside the virtual machine.
• Configuring network settings (NAT, bridge mode).
• Installing necessary packages and software.

In the case of Docker, the configuration of the virtual environment is done through creating a Dockerfile, which describes the image, dependencies, and commands to run the container.

Example of a simple Dockerfile:

FROM openjdk:11
COPY ./app.jar /app.jar
CMD ["java", "-jar", "/app.jar"]

Thus, virtual environments allow isolating applications and their environment, which simplifies development and deployment.