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Docker
Core details
Title
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Description
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Docker containerizes apps with images for portable, consistent envs across dev/prod using Dockerfile and docker-compose for multi-service. Orchestrate with Swarm/K8s.
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Usage & Trade-offs
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When to use it
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Use Docker when: - Consistent deploys. - Microservices. - CI images. - Local stacks.
Pros
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- Isolation. - Layers cache. - Registries. - Volumes persist. - Free.
Cons
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- Overhead. - Security scans. - Size bloat. - Networking. - Learning.
Notes
Note: FROM node:alpine. EXPOSE ports. docker build -t .
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