11- Mastering DevOps Batch Dockerfile Tutorial FROM RUN EXPOSE ENTRYPOINT Multi-Stage Build скачать в хорошем качестве

11- Mastering DevOps Batch Dockerfile Tutorial FROM RUN EXPOSE ENTRYPOINT Multi-Stage Build

11- Mastering DevOps Batch Dockerfile Tutorial FROM RUN EXPOSE ENTRYPOINT Multi-Stage Build Welcome to Mastering DevOps Batch – Dockerfile Lecture In this session, I explained Dockerfile from scratch with practical examples and real-time demonstrations. This lecture covers: ✅ What is a Dockerfile ✅ Why Dockerfile is important in DevOps ✅ Dockerfile structure and syntax ✅ FROM instruction ✅ RUN instruction ✅ EXPOSE instruction ✅ ENTRYPOINT instruction ✅ USER instruction ✅ Difference between CMD and ENTRYPOINT ✅ Complete working example ✅ Multi-Stage Dockerfile with real use case ✅ Image size optimization ✅ Production best practices 🐳 What is Dockerfile? A Dockerfile is a text file that contains instructions to automatically build a Docker image. Instead of manually creating containers and committing changes, we define everything in code. Build command used in lecture: docker build -t myapp:1.0 . 📦 Keywords Explained in This Lecture FROM – Base image selection RUN – Execute commands during build EXPOSE – Define application port USER – Run container as non-root user ENTRYPOINT – Define container startup command Multi-Stage Dockerfile – Reduce image size & improve security 🔥 Multi-Stage Dockerfile Covered In this lecture, I explained: Build stage Runtime stage Copying artifacts using --from Reducing image size Production-ready image creation Example concept covered: FROM maven AS builder RUN mvn package FROM openjdk COPY --from=builder /app/target/app.jar . ENTRYPOINT ["java","-jar","app.jar"] dockerfile tutorial, dockerfile devops, mastering devops batch, dockerfile keywords, dockerfile from run expose, dockerfile entrypoint vs cmd, dockerfile user instruction, multistage dockerfile, docker multi stage build, docker image optimization, docker build tutorial, devops docker course, dockerfile interview questions, dockerfile practical, docker full course, docker devops training, docker production best practices, dockerfile example, dockerfile hands on, devops course docker lecture, containerization tutorial, docker for beginners, docker advanced concepts