Update old apt-get command

[pav-alekseev]

Proposed changes

This tutorial uses the old apt-get command. This commit updates that command to the new command apt.

[GordonTheTurtle]

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Built with commit 17cf632

https://deploy-preview-8135--docsdocker.netlify.com

[bermudezmt]

@thaJeztah since the apt command is becoming more popular as a package manager, should we update our instructions with a note that apt-get is still more stable and more suitable for use in automation? I wanted to hear your thoughts.

[thaJeztah]

I recall we held off this change in the past, due to apt not always showing the same behavior between distro versions, but perhaps it's stable enough now (and some older distro versions are no longer supported).

If we do decide to change this, we should be sure to update this consistently for all .deb based distros (so also the Debian installation instructions, as well as the Docker EE instructions).

@ijc @tianon WDYT?

[thaJeztah]

Wondering if we should use apt list -a docker-ce instead;

apt list -a docker-ce
Listing... Done
docker-ce/bionic,now 5:18.09.1~3-0~ubuntu-bionic amd64 [installed]
docker-ce/bionic 5:18.09.0~3-0~ubuntu-bionic amd64
docker-ce/bionic 18.06.1~ce~3-0~ubuntu amd64
docker-ce/bionic 18.06.0~ce~3-0~ubuntu amd64
docker-ce/bionic 18.05.0~ce~3-0~ubuntu amd64
docker-ce/bionic 18.03.1~ce~3-0~ubuntu amd64

[tianon]

Yeah I'm not sure on this, apt is officially discouraged for use in scripts and apt-get is likely to stay supported for a long time, so it might be worth mentioning both.

[bermudezmt]

Hello @tianon and @thaJeztah - let me know what you decide. My gut tells me we can postpone the change, since it involves updating all Debian installation pages including EE, and making a note of the stability of apt-get. Happy to make the necessary changes though if we decide to proceed.

[thaJeztah]

Yes, perhaps we should postpone this change. I think most users familiar with their Linux distro would know that apt and apt-get are interchangeable for these examples, so (if they prefer apt) would already use that.

For those that copy/paste the instructions from this page, it wouldn't make a big difference.

So, when in doubt, "no" is the safe answer ("no is temporary, yes is forever")

[bermudezmt]

Thank you for linking that tweet @thaJeztah - such wisdom.

@RukkiesMan Thank you for your feedback! We've decided not to incorporate your suggested changes at this time, but rest assured, we will consider this change on our content refactor.