add proof of concept ci script

ci/test.sh

@@ -0,0 +1,24 @@
+#!/usr/bin/env bash
+
+function call_remote {
+  local fn="$1"
+  local args="${@:2}"
+
+  ssh -l christian -p 2200 ulrich.earth "$(declare -f $fn); $fn '$args'"
+}
+
+function worker_has_nix {
+  which nix-env 2>&1 >/dev/null
+  has_nix_env=$?
+  which nix-channel 2>&1 >/dev/null
+  has_nix_channel=$?
+  [ "$has_nix_env" -eq 0 ] && [ "$has_nix_channel" -eq 0 ]
+  echo $?
+}
+
+function test {
+  $(declare -f worker_has_nix); worker_has_nix
+}
+
+call_remote worker_has_nix
+