add x86_64 check in downloadScript

README.md

@@ -36,6 +36,11 @@ We currently support:
 - MacOS
 - WSL
 
+For the remote server, we currently only support Linux `x86_64` (64-bit)
+servers with `glibc`. `musl` libc (which is most notably used by Alpine Linux)
+is currently not supported on the remote server:
+[#122](https://github.com/cdr/sshcode/issues/122).
+
 ## Usage
 
 ```bash

sshcode.go

@@ -345,6 +345,7 @@ func downloadScript(codeServerPath string) string {
 	return fmt.Sprintf(
 		`set -euxo pipefail || exit 1
 
+[ "$(uname -m)" != "x86_64" ] && echo "Unsupported server architecture $(uname -m). code-server only has releases for x86_64 systems." && exit 1
 pkill -f %v || true
 mkdir -p ~/.local/share/code-server %v
 cd %v