Move Ruby/Go/Git/Node.js requirements to source installation

Co-authored-by: Achilleas Pipinellis <axil@gitlab.com>
Signed-off-by: Takuya Noguchi <takninnovationresearch@gmail.com>

doc/install/installation.md

@@ -45,6 +45,15 @@ You can select the branch in the version dropdown in the top left corner of GitL
 
 If the highest number stable branch is unclear, check the [GitLab blog](https://about.gitlab.com/blog/) for installation guide links by version.
 
+## Software requirements
+
+| Software | Minimum version | Notes |
+| -------- | --------------- | ----- |
+| [Ruby](#2-ruby)     | `2.7`             | From GitLab 13.6, Ruby 2.7 is required. Ruby 3.0 is not supported yet (see [the relevant epic](https://gitlab.com/groups/gitlab-org/-/epics/5149) for the current status). You must use the standard MRI implementation of Ruby. We love [JRuby](https://www.jruby.org/) and [Rubinius](https://github.com/rubinius/rubinius#the-rubinius-language-platform), but GitLab needs several Gems that have native extensions. |
+| [Go](#3-go) | `1.15` | |
+| [Git](#git) | `2.31.x` | From GitLab 13.11, Git 2.31.x and later is required. It's highly recommended that you use the [Git version provided by Gitaly](#git). |
+| [Node.js](#4-node) | `12.22.1` | GitLab uses [webpack](https://webpack.js.org/) to compile frontend assets. Node.js 14.x is recommended, as it's faster. You can check which version you're running with `node -v`. You need to update it to a newer version if needed. |
+
 ## GitLab directory structure
 
 This is the main directory structure you end up with following the instructions
@@ -207,7 +216,7 @@ sudo apt-get install -y libimage-exiftool-perl
 ## 2. Ruby
 
 The Ruby interpreter is required to run GitLab.
-See the [requirements page](requirements.md#ruby-versions) for the minimum
+See the [requirements section of this page](#software-requirements) for the minimum
 Ruby requirements.
 
 The use of Ruby version managers such as [`RVM`](https://rvm.io/), [`rbenv`](https://github.com/rbenv/rbenv) or [`chruby`](https://github.com/postmodern/chruby) with GitLab

doc/install/requirements.md

@@ -47,55 +47,6 @@ Please consider using a virtual machine to run GitLab.
 
 ## Software requirements
 
-### Ruby versions
-
-From GitLab 13.6:
-
-- Ruby 2.7 and later is required.
-
-From GitLab 12.2:
-
-- Ruby 2.6 and later is required.
-
-You must use the standard MRI implementation of Ruby.
-We love [JRuby](https://www.jruby.org/) and [Rubinius](https://github.com/rubinius/rubinius#the-rubinius-language-platform), but GitLab
-needs several Gems that have native extensions.
-
-### Go versions
-
-The minimum required Go version is 1.13.
-
-### Git versions
-
-From GitLab 13.11:
-
-- Git 2.31.x and later is required. We recommend you use the
-  [Git version provided by Gitaly](installation.md#git).
-
-From GitLab 13.6:
-
-- Git 2.29.x and later is required.
-
-From GitLab 13.1:
-
-- Git 2.24.x and later is required.
-- Git 2.28.x and later [is recommended](https://gitlab.com/gitlab-org/gitaly/-/issues/2959).
-
-### Node.js versions
-
-Beginning in GitLab 12.9, we only support Node.js 10.13.0 or higher, and we have dropped
-support for Node.js 8. (Node.js 6 support was dropped in GitLab 11.8)
-
-We recommend Node 14.x, as it's faster.
-
-GitLab uses [webpack](https://webpack.js.org/) to compile frontend assets, which requires a minimum
-version of Node.js 10.13.0.
-
-You can check which version you're running with `node -v`. If you're running
-a version older than `v10.13.0`, you need to update it to a newer version. You
-can find instructions to install from community maintained packages or compile
-from source at the [Node.js website](https://nodejs.org/en/download/).
-
 ### Redis versions
 
 GitLab 13.0 and later requires Redis version 4.0 or higher.

doc/update/upgrading_from_source.md

@@ -82,7 +82,7 @@ sudo make install
 
 ### 4. Update Node.js
 
-To check the minimum required Node.js version, see [Node.js versions](../install/requirements.md#nodejs-versions).
+To check the minimum required Node.js version, see [Node.js versions](../install/installation.md#software-requirements).
 
 GitLab also requires the use of Yarn `>= v1.10.0` to manage JavaScript
 dependencies.
@@ -99,7 +99,7 @@ More information can be found on the [Yarn website](https://classic.yarnpkg.com/
 
 ### 5. Update Go
 
-To check the minimum required Go version, see [Go versions](../install/requirements.md#go-versions).
+To check the minimum required Go version, see [Go versions](../install/installation.md#software-requirements).
 
 You can check which version you are running with `go version`.
 
@@ -119,12 +119,8 @@ rm go1.13.5.linux-amd64.tar.gz
 
 ### 6. Update Git
 
-WARNING:
-From GitLab 13.1, you must use at least Git v2.24 (previous minimum version was v2.22).
-Git v2.28 is recommended.
-
 To check you are running the minimum required Git version, see
-[Git versions](../install/requirements.md#git-versions).
+[Git versions](../install/installation.md#software-requirements).
 
 From GitLab 13.6, we recommend you use the [Git version provided by
 Gitaly](https://gitlab.com/gitlab-org/gitaly/-/issues/2729)