Ubuntu installation is complete, perform dockerfile subsequent commands,
To this point,
Dockerfile code in:
RUN apt - get the install - y dovecot - imapd dovecot - pop3d postfix
Terminal operation dovecot installed, postfix when installation options:
Selecting previously unselected package postfix.
Preparing to unpack.../postfix_3. 1.0 3 _amd64. Deb...
Debconf: unable to initialize frontend: Dialog
Debconf: (the TERM is not set, so the dialog frontend is not usable.)
Debconf: falling back to frontend: Readline
Postfix Configuration
-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
Both Please select the mail server configuration type that best meets your needs.
No configuration:
Should be feature to leave the current configuration unchanged.
The Internet site:
E-mail is sent and received directly using SMTP.
The Internet with smarthost:
The Mail is received directly using SMTP or by running a utility to
As fetchmail. Outgoing mail is sent using a smarthost.
Satellite system:
All mail is sent to another machine, called a 'smarthost', for delivery.
The Local only:
The only delivered mail is The mail for local users. There is no network.
1. No configuration 3. Internet with smarthost 5. Local only
2. Internet Site 4. Satellite system
The General type of mail configuration:
I chose 2 above, then there is no any movement,,,,,,,
Internet use apt - has said the get the install - y - o Option: :="2" postfix experiments failed.
How can automatically choose?