Canvas: Use volume to persist data

Change-Id: Ia93299590885c91d6e44c1e8842ba2c259bfc8a0
diff --git a/apps/canvas/back/src/index.ts b/apps/canvas/back/src/index.ts
index 76e250a..5ab90ef 100644
--- a/apps/canvas/back/src/index.ts
+++ b/apps/canvas/back/src/index.ts
@@ -491,8 +491,7 @@
 		resp.status(200);
 		resp.write(
 			JSON.stringify({
-				// TODO(gio): get from env or command line flags
-				managerAddr: "http://10.42.0.95:8081",
+				managerAddr: env.INTERNAL_API_ADDR,
 				deployKey: project.deployKey,
 				access: JSON.parse(project.access ?? "[]"),
 				integrations: {