Describe the bug

The GitHub CLI doesn't work on Alpine Linux.

Steps to reproduce the behavior

1. docker run --rm -it alpine
2. apk add curl
3. curl -fsSL 'https://github.com/cli/cli/releases/download/v1.3.1/gh_1.3.1_linux_amd64.tar.gz' | tar -C /usr/local --strip-components=1 -xz
4. /bin/sh: /usr/local/bin/gh: not found

file /usr/local/bin/gh
/usr/local/bin/gh: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2, Go BuildID=fHoTSnnFVd8_yvfygXJN/whl8jqmcJwgrVZga1VFz/1O5vTCOdUnMNVQGvoQWV/v_1Dyi7uTOxQtchpd1Ks, stripped

Expected vs actual behavior

Go binaries should work on all Linux platforms when compiled statically.

I assume you're just missing the CGO_ENABLED=0 environment variable when building.