[Solved] You wrote this Dockerfile using a distroless image:FROM gcr.io/distroless/base COPY app /app CMD ["/app"]But when you run the container, it exits immediately with... What is the most likely cause? | Docker

Docker - Image Optimization

You wrote this Dockerfile using a distroless image:

FROM gcr.io/distroless/base
COPY app /app
CMD ["/app"]

But when you run the container, it exits immediately with no logs. What is the most likely cause?

AThe CMD syntax is incorrect for distroless images

BThe distroless image requires a shell to run commands

CThe container needs a package manager to start

DThe app binary is missing executable permissions

Step-by-Step Solution

Solution:

Step 1: Check distroless image requirements
Distroless images run the app binary directly without a shell or package manager.
Step 2: Identify common cause of immediate exit
If the app binary lacks executable permission, the container will exit immediately without running the app.
Final Answer:
The app binary is missing executable permissions -> Option D
Quick Check:
Missing exec permission = container exits immediately [OK]

Quick Trick: Check app permissions; distroless runs binary directly [OK]

Common Mistakes:

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