Add MySQL 8.0.0 DMR

[TimWolla]

This adds a Dockerfile for MySQL 8.0. MySQL 8.0 has been released a month ago as a Development Milestone release. Thus it's not a full release, but they claim that it should be as stable as a release candidate.

Until MySQL 8.0 is stable / a GA release MySQL 5.7 should remain latest, allowing interested developers to check whether their application works fine using MySQL 8.0 by opting in. In fact I just switched over a development database of mine from 5.7 to 8.0 without any issues.

[timwolla@/s/D/o/mysql (8.0)]diff -Nurw 5.7/ 8.0/                                                                                                                                                           22:37:30
diff -Nurw 5.7/Dockerfile 8.0/Dockerfile
--- 5.7/Dockerfile  2016-10-12 22:23:08.341968479 +0200
+++ 8.0/Dockerfile  2016-10-12 22:23:08.573973717 +0200
@@ -29,8 +29,8 @@
 # gpg: key 5072E1F5: public key "MySQL Release Engineering <mysql-build@oss.oracle.com>" imported
 RUN apt-key adv --keyserver ha.pool.sks-keyservers.net --recv-keys A4A9406876FCBD3C456770C88C718D3B5072E1F5

-ENV MYSQL_MAJOR 5.7
-ENV MYSQL_VERSION 5.7.15-1debian8
+ENV MYSQL_MAJOR 8.0
+ENV MYSQL_VERSION 8.0.0-dmr-1debian8

 RUN echo "deb http://repo.mysql.com/apt/debian/ jessie mysql-${MYSQL_MAJOR}" > /etc/apt/sources.list.d/mysql.list

[tianon]

Nice!

cc @ltangvald

[yosifkit]

Changes seem fine to me. Can you add 8.0 to the travis file too.

diff 5.7/Dockerfile <( curl -fsSL https://raw.githubusercontent.com/TimWolla/mysql/965ff86a25b143059fab9c8ea69f7a2d3ec17814/8.0/Dockerfile)
32,33c32,33
< ENV MYSQL_MAJOR 5.7
< ENV MYSQL_VERSION 5.7.15-1debian8
---
> ENV MYSQL_MAJOR 8.0
> ENV MYSQL_VERSION 8.0.0-dmr-1debian8

diff 5.7/docker-entrypoint.sh <( curl -fsSL https://raw.githubusercontent.com/TimWolla/mysql/965ff86a25b143059fab9c8ea69f7a2d3ec17814/8.0/docker-entrypoint.sh)
# none

[TimWolla]

Can you add 8.0 to the travis file too.

@yosifkit Sure thing. I just force pushed over my branch and the tests are running 👍

[ltangvald]

LGTM :)

While 8.0 has significant changes from 5.7, the process for installing and starting it up on Linux should be pretty much identical.

Just note that the dmr tag means we don't claim this is as stable as a release candidate (it should be, but we can't guarantee)

[TimWolla]

While 8.0 has significant changes from 5.7, the process for installing and starting it up on Linux should be pretty much identical.

The Dockerfile ran fine for my quick test, both using a fresh database and one upgraded from the 5.7 Docker image. In case that there are issues left users opting into the DMR are the best way to find out 😄

[ltangvald]

Yeah, we added 8.0 images for mysql/mysql-server, pretty much just by copying the 5.7 source and switching the version :)

Note that upgrading from 5.7 to 8.0 is very much a one-way street, even without running mysql_upgrade, as it will replace much of the database metadata on the first startup.