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Containers’n stuff Andreas Mosti | Bekk

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Why containers?

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Shipping is hard!

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Specification for packaging, shipping and running services

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FROM JRE11 COPY app.jar CMD app.jar FROM MAVEN- JDK11 COPY src/ . RUN mvn package CMD app.jar

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FROM MAVEN-JDK11 AS BUILD COPY src/ . RUN mvn package FROM JRE11 AS RUNTIME COPY –FROM=BUILD app.jar CMD app.jar

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Containers are minimal

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Containers are task-specific

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Containers are isolated

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Containers are reproducible (ish)

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Use fixed tags for immutability

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Use multistage builds for small, robust images

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Container breakout

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Secrets leakage

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Container resource abuse

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Signed container images

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