feat: Add update.sh to pick latest commit

update.sh

@@ -0,0 +1,12 @@
+#! /usr/bin/env bash
+
+set -euo pipefail
+
+GATUS_REPO="selfhoster1312/gatus"
+GATUS_BRANCH="fork"
+
+GATUS_REF="$(git ls-remote -b https://github.com/$GATUS_REPO refs/heads/$GATUS_BRANCH | cut -f1)"
+echo "Updating to latest commit on $GATUS_REPO branch $GATUS_BRANCH: $GATUS_REF"
+
+sed -i "s,GATUS_REPO: ".*",GATUS_REPO: \"$GATUS_REPO\"," .github/workflows/release.yml
+sed -i "s,GATUS_REF: ".*",GATUS_REF: \"$GATUS_REF\"," .github/workflows/release.yml