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Fundamentals · Medium · Free

How does Docker help you ship a web app consistently?

FresherFundamentalsWeb & Full-Stack
Model answer

Docker for web apps

Image packages app + runtime dependencies; container runs isolated on any host. Same image dev→CI→prod reduces "works on my machine".

dockerfile
FROM eclipse-temurin:21-jre
COPY build/libs/app.jar /app.jar
ENTRYPOINT ["java","-jar","/app.jar"]
Multi-stage build: compile in builder image, slim runtime image.