Now, organizations have started utilizing the power of containers for their application. So, here, you must have a question; what is a container? A container is a standardized unit of software development, containing everything that your software application needs to run: code, runtime, system tools, system libraries, and so on. Containers are created from a read-only template named an image.
Images are created from Dockerfile, which is a text file that includes all the components and configuration required for a container.
Let's see the example of a Dockerfile for JBoss WildFly, running a Java application.
For this, we have created a Dockerfile for the hello world application:
FROM jboss/wildfly:latest ARG APP_FILE=helloworld.war ...