Alpine support

Reproduce the reported commands in an Alpine container, starting with podman run -it --rm alpine and the sh <(curl tea.xyz) entry point. Investigate why the downloaded gum binary cannot run there; done means the installer completes and gum runs successfully on Alpine.

Bootstrap in container.

podman run -it --rm alpine

Installing curl and running tea.

/ # apk add curl
fetch https://dl-cdn.alpinelinux.org/alpine/v3.16/main/x86_64/APKINDEX.tar.gz
fetch https://dl-cdn.alpinelinux.org/alpine/v3.16/community/x86_64/APKINDEX.tar.gz
(1/5) Installing ca-certificates (20220614-r0)
(2/5) Installing brotli-libs (1.0.9-r6)
(3/5) Installing nghttp2-libs (1.47.0-r0)
(4/5) Installing libcurl (7.83.1-r4)
(5/5) Installing curl (7.83.1-r4)
Executing busybox-1.35.0-r17.trigger
Executing ca-certificates-20220614-r0.trigger
OK: 8 MiB in 19 packages
/ # sh <(curl tea.xyz)
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100  8627  100  8627    0     0  63106      0 --:--:-- --:--:-- --:--:-- 62970
                                      /dev/fd/64: line 173: /root/.tea/charm.sh/gum/v0.8.0/bin/gum: not found
/ #

gum is there, but it is not executable.

/ # apk add file
(1/2) Installing libmagic (5.41-r0)
(2/2) Installing file (5.41-r0)
Executing busybox-1.35.0-r17.trigger
OK: 15 MiB in 21 packages
/ # file /root/.tea/charm.sh/gum/v0.8.0/bin/gum 
/root/.tea/charm.sh/gum/v0.8.0/bin/gum: ELF 64-bit LSB pie executable, x86-64, version 1 (SYSV), dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2, Go BuildID=yTUp2qAJqe_xPUobZxaV/mZxURjpe-HEM-BnNCYdd/BHsDweByhsUWmtZfsC0P/UVLtlJRmGQGIpoU2Sb7b, stripped
/ # /root/.tea/charm.sh/gum/v0.8.0/bin/gum 
/bin/sh: /root/.tea/charm.sh/gum/v0.8.0/bin/gum: not found