#エラー内容
Laradockにおいて、docker-compose up -d workspaceを行った際にエラーが出たため、共有しておきます。

ERROR: The Compose file './docker-compose.yml' is invalid because:
services.proxy.expose is invalid: should be of the format 'PORT[/PROTOCOL]'
services.proxy2.expose is invalid: should be of the format 'PORT[/PROTOCOL]'
services.memcached.ports is invalid: Invalid port ":11211", should be [[remote_ip:]remote_port[-remote_port]:]port[/protocol]
services.beanstalkd.ports is invalid: Invalid port ":11300", should be [[remote_ip:]remote_port[-remote_port]:]port[/protocol]
services.mssql.ports is invalid: Invalid port ":1433", should be [[remote_ip:]remote_port[-remote_port]:]port[/protocol]
services.rabbitmq.ports is invalid: Invalid port ":15671", should be [[remote_ip:]remote_port[-remote_port]:]port[/protocol]
services.rabbitmq.ports is invalid: Invalid port ":15672", should be [[remote_ip:]remote_port[-remote_port]:]port[/protocol]
services.workspace.ports is invalid: Invalid port ":22", should be [[remote_ip:]remote_port[-remote_port]:]port[/protocol]
services.mongo.ports is invalid: Invalid port ":27017", should be [[remote_ip:]remote_port[-remote_port]:]port[/protocol]
services.aerospike.ports is invalid: Invalid port ":3000", should be [[remote_ip:]remote_port[-remote_port]:]port[/protocol]
services.aerospike.ports is invalid: Invalid port ":3001", should be [[remote_ip:]remote_port[-remote_port]:]port[/protocol]
services.aerospike.ports is invalid: Invalid port ":3002", should be [[remote_ip:]remote_port[-remote_port]:]port[/protocol]
services.aerospike.ports is invalid: Invalid port ":3003", should be [[remote_ip:]remote_port[-remote_port]:]port[/protocol]
services.mariadb.ports is invalid: Invalid port ":3306", should be [[remote_ip:]remote_port[-remote_port]:]port[/protocol]
services.mysql.ports is invalid: Invalid port ":3306", should be [[remote_ip:]remote_port[-remote_port]:]port[/protocol]
services.percona.ports is invalid: Invalid port ":3306", should be [[remote_ip:]remote_port[-remote_port]:]port[/protocol]
services.apache2.ports is invalid: Invalid port ":443", should be [[remote_ip:]remote_port[-remote_port]:]port[/protocol]
services.caddy.ports is invalid: Invalid port ":443", should be [[remote_ip:]remote_port[-remote_port]:]port[/protocol]
services.nginx.ports is invalid: Invalid port ":443", should be [[remote_ip:]remote_port[-remote_port]:]port[/protocol]
services.selenium.ports is invalid: Invalid port ":4444", should be [[remote_ip:]remote_port[-remote_port]:]port[/protocol]
services.jenkins.ports is invalid: Invalid port ":50000", should be [[remote_ip:]remote_port[-remote_port]:]port[/protocol]
services.postgres.ports is invalid: Invalid port ":5432", should be [[remote_ip:]remote_port[-remote_port]:]port[/protocol]
services.postgres-postgis.ports is invalid: Invalid port ":5432", should be [[remote_ip:]remote_port[-remote_port]:]port[/protocol]
services.kibana.ports is invalid: Invalid port ":5601", should be [[remote_ip:]remote_port[-remote_port]:]port[/protocol]
services.rabbitmq.ports is invalid: Invalid port ":5672", should be [[remote_ip:]remote_port[-remote_port]:]port[/protocol]
services.laravel-echo-server.ports is invalid: Invalid port ":6001", should be [[remote_ip:]remote_port[-remote_port]:]port[/protocol]
services.apache2.ports is invalid: Invalid port ":80", should be [[remote_ip:]remote_port[-remote_port]:]port[/protocol]
services.caddy.ports is invalid: Invalid port ":80", should be [[remote_ip:]remote_port[-remote_port]:]port[/protocol]
services.nginx.ports is invalid: Invalid port ":80", should be [[remote_ip:]remote_port[-remote_port]:]port[/protocol]
services.phpmyadmin.ports is invalid: Invalid port ":80", should be [[remote_ip:]remote_port[-remote_port]:]port[/protocol]
services.adminer.ports is invalid: Invalid port ":8080", should be [[remote_ip:]remote_port[-remote_port]:]port[/protocol]
services.jenkins.ports is invalid: Invalid port ":8080", should be [[remote_ip:]remote_port[-remote_port]:]port[/protocol]
services.rethinkdb.ports is invalid: Invalid port ":8080", should be [[remote_ip:]remote_port[-remote_port]:]port[/protocol]
services.balancer.ports is invalid: Invalid port ":8085", should be [[remote_ip:]remote_port[-remote_port]:]port[/protocol]
services.minio.ports is invalid: Invalid port ":9000", should be [[remote_ip:]remote_port[-remote_port]:]port[/protocol]
services.elasticsearch.ports is invalid: Invalid port ":9200", should be [[remote_ip:]remote_port[-remote_port]:]port[/protocol]
services.elasticsearch.ports is invalid: Invalid port ":9300", should be [[remote_ip:]remote_port[-remote_port]:]port[/protocol]

とりあえず、ymlファイルが読めないみたいです。

#解決方法
laradock公式のhttp://laradock.io/に書いてある

cp env-example .env

を実行してあげれば解決しました。

自分でも忘れないために共有しておきます。

迷ったら公式をみるのも良いみたいです。。。