Upgrade to docker compose v2 (getodk#789)

Author: yanokwa

lib/model/knexfile.js

@@ -20,7 +20,7 @@ NODE_CONFIG_DIR=../../config npx knex migrate:up --knexfile lib/model/knexfile.j
 
 In production (after the service is up):
 
-docker-compose exec --env NODE_CONFIG_DIR=../../config service npx knex migrate:up --knexfile lib/model/knexfile.js 20211111-01-my-migration.js
+docker compose exec --env NODE_CONFIG_DIR=../../config service npx knex migrate:up --knexfile lib/model/knexfile.js 20211111-01-my-migration.js
 
 The DEBUG environment variable can also be helpful. For example: