You want to build a minimal Docker container using scratch that runs a Go application. Which steps should you follow to ensure the container runs correctly?
hard📝 Best Practice Q15 of 15
Docker - Image Optimization
You want to build a minimal Docker container using scratch that runs a Go application. Which steps should you follow to ensure the container runs correctly?
ACompile the Go app statically, use <code>FROM scratch</code>, copy the binary, and set CMD
BUse <code>FROM scratch</code>, copy the Go source code, and run <code>go run</code> inside the container
CUse <code>FROM alpine</code>, install Go, and compile the app inside the container
DCompile the Go app dynamically, use <code>FROM scratch</code>, copy the binary, and set CMD
Step-by-Step Solution
Solution:
Step 1: Compile Go app statically
Static compilation bundles all dependencies, so the binary runs without extra libraries.
Step 2: Use FROM scratch and copy binary
Since scratch is empty, copy the static binary and set the command to run it.
Final Answer:
Compile the Go app statically, use FROM scratch, copy the binary, and set CMD -> Option A
Quick Check:
Static binary + scratch base = minimal working container [OK]
