add ignores for shellcheck

docker/init_scripts/init

@@ -1,4 +1,5 @@
 #!/usr/bin/env bash
+# trunk-ignore-all(shellcheck/SC2016)
 
 set -o errexit           # treat errors as fatal
 set -o nounset           # treat unset variables as an error

entrypoint.sh

@@ -1,4 +1,6 @@
 #!/bin/bash
+# trunk-ignore-all(shellcheck/SC2016)
+
 set -e
 
 echo "Starting entrypoint script..."