Use a trap to kill /opt/go/out when term is sent by concourse

Signed-off-by: Jonathan Harden <[email protected]>

assets/out

@@ -17,4 +17,13 @@ git_config_payload=$(jq -r '.source.git_config // []' < $payload)
 
 configure_git_global "${git_config_payload}"
 
-/opt/go/out $1 >&3 < $payload
+_terminate() {
+  kill -TERM "$child" 2>/dev/null
+}
+
+trap _terminate TERM
+
+/opt/go/out $1 >&3 < $payload &
+
+child=$!
+wait "$child"