Group the build output in GitHub Action

build-functions/gh-functions.sh

@@ -0,0 +1,21 @@
+#!/bin/bash
+
+###
+# A regular echo, that only prints if ${GH_ACTION} is defined.
+###
+gh_echo() {
+  if [ -n "${GH_ACTION}" ]; then
+    echo "${@}"
+  fi
+}
+
+###
+# Prints the output to the file defined in ${GITHUB_ENV}.
+# Only executes if ${GH_ACTION} is defined.
+# Example Usage: gh_env "FOO_VAR=bar_value"
+###
+gh_env() {
+  if [ -n "${GH_ACTION}" ]; then
+    echo "${@}" >>"${GITHUB_ENV}"
+  fi
+}