exec /bin/sh: exec format error on Apple Silicon ARM64 / amd64 mismatch

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🎯 Target Goal & Friction

Goal: Fix cross-platform architecture mismatch during Docker container build

Error Signature: exec /bin/sh: exec format error / standard_init_linux.go: exec user process caused: exec format error

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https://docs.docker.com/build/building/multi-platform/ →

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Verified Code / Configuration Diff

@@ Dockerfile @@
- FROM node:20-alpine
+ FROM --platform=linux/amd64 node:20-alpine

1-Line Instant CLI Fix

docker buildx build --platform linux/amd64 -t app .

Root Cause & Explanation

Occurs when a container image built for x86_64/amd64 is run on Apple Silicon ARM64 (or vice-versa) without QEMU emulation or explicit `--platform=linux/amd64`.