흔적s

아래순서 그대로 했음(당연히 centos 설치한 vm에서 진행했고, root 계정으로 진행함 )

1. centos 설치하자 마자 업데이트 함

  $yum update

  $reboot

  재부팅 되면

  $yum update kernel

  $reboot

  재부팅 되면

   $yum groupinstall "Development tools"

   $yum install kernel-devel (이건 반복이긴 한디... 어쨋든 수행함 )

2.Install VirtualBox Guest Additions(확장판 설치)

  $cd /mnt

  $mkdir cdrom && mount /dev/cdrom /mnt/cdrom

  $cd cdrom && ./VBoxLinuxAdditions.run

3. 공유폴더 설정

  해당 vm 에서 [설정>공유폴더>  ].

[root@vm ~]# mkdir /vm_share_dir

[root@vm ~]# mount -t vboxsf virtualbox_share /vm_share_dir

 ( virtualbox_share 는 버츄얼박스 공유폴더 설정명 )

### 마운트 되었는지 확인 ####

[root@vm ~]# mount

......

 vm_share_dir on /vm_share_dir type vboxsf (rw)`

ERROR: The Compose file './docker-compose.yml' is invalid because:

Invalid top-level property "manager". Valid top-level sections for this Compose file are: version, services, networks, volumes, secrets, configs, and extensions starting with "x-".

You might be seeing this error because you're using the wrong Compose file version. Either specify a supported version (e.g "2.2" or "3.3") and place your service definitions under the `services` key, or omit the `version` key and place your service definitions at the root of the file to use version 1.

For more on the Compose file format versions, see https://docs.docker.com/compose/compose-file/