feat(stacks): rework pages + new Jekyll tag

assets/style.css

@@ -495,9 +495,12 @@ article aside.note a {
   font-weight: var(--font-weight-bold, 700);
 }
 
-article aside.note code.language-plaintext {
+article aside.note code.language-plaintext,
+article .stack:not(table .stack) {
   background-color: var(--color-primary-purple-200-60);
   color: var(--color-primary-purple-800);
+  padding: 0 0.33rem;
+  border-radius: 6px;
 }
 
 article aside.warning {
@@ -765,7 +768,8 @@ article pre {
   }
 }
 
-article code.language-plaintext {
+article code.language-plaintext,
+article .stack:not(table .stack) {
   background-color: var(--color-sc-gray-3);
   color: var(--color-sc-gray-2);
   font-family: var(--font-mono);
@@ -1206,3 +1210,36 @@ ol.deploy-timeline {
         }
     }
 }
+
+article .stack {
+    align-items: center;
+    display: inline-flex;
+    gap: 0.33rem;
+
+    &::after {
+        content: "\25CF";           /* ⏺ (black circle) */
+    }
+
+    &.default,
+    &.supported {
+        &::after {
+            color: rgb(103, 194, 58);
+            margin-top: -0.1rem;    /* Small adj. for v-alignment */
+        }
+    }
+
+    &.deprecated {
+        &::after {
+            color: rgb(230, 162, 60);
+            content: "\25B2";       /* ▲ (plain up-pointing triangle) */
+            margin-top: -0.2rem;    /* Small adj. for v-alignment */
+        }
+    }
+
+    &.discontinued {
+        &::after {
+            color: rgb(245, 108, 108);
+            content: "\1F7AD";      /* 🞭 (very heavy saltire) */
+        }
+    }
+}

src/_includes/nginx_versions.md

@@ -7,4 +7,4 @@ Scalingo supports the following versions of Nginx:
 
 {% include scalingo_22_deprecation_note.md %}
 
-[EOL]: {% post_url platform/internals/stacks/2000-01-01-stacks %}#stack-end-of-life
+[EOL]: {% post_url platform/internals/stacks/2000-01-01-overview %}#lifecycle

src/_includes/scalingo_22_deprecation_note.md

@@ -1,4 +1,11 @@
 {% note %}
-The [`scalingo-22`]({% post_url platform/internals/stacks/2000-01-01-scalingo-22-stack %}) stack is deprecated and will be discontinued on June 1, 2027.
-Applications must be migrated to [`scalingo-24`]({% post_url platform/internals/stacks/2000-01-01-scalingo-24-stack %}) or [`scalingo-26`]({% post_url platform/internals/stacks/2000-01-01-scalingo-26-stack %}) before this date.
+[{% scalingo 22 %}][scalingo-22] is now deprecated.\\
+It will be discontinued on June 1, 2027. Applications must be migrated to
+another [stack], such as [{% scalingo 24 %}][scalingo-24] or
+[{% scalingo 26 %}][scalingo-26] before this date.
 {% endnote %}
+
+[stack]: {% post_url platform/internals/stacks/2000-01-01-overview %}
+[scalingo-22]: {% post_url platform/internals/stacks/2000-01-01-scalingo-22-stack %}
+[scalingo-24]: {% post_url platform/internals/stacks/2000-01-01-scalingo-24-stack %}
+[scalingo-26]: {% post_url platform/internals/stacks/2000-01-01-scalingo-26-stack %}

src/_plugins/jekyll-stack-tag.rb

@@ -0,0 +1,25 @@
+module Jekyll
+  class StackTag < Liquid::Tag
+    CLASSES = {
+      "26" => "supported",
+      "24" => "supported",
+      "22" => "deprecated",
+      "20" => "discontinued",
+      "18" => "discontinued",
+      "14" => "discontinued"
+    }.freeze
+
+    def initialize(tag_name, markup, tokens)
+      super
+      @stack = markup.strip
+    end
+
+    def render(context)
+      css_class = CLASSES.fetch(@stack, "unknown")
+
+      %(<span class="stack #{css_class}" title="Current status: #{css_class.capitalize}">scalingo-#{@stack}</span>)
+    end
+  end
+end
+
+Liquid::Template.register_tag("scalingo", Jekyll::StackTag)

src/_posts/addons/scalingo-openvpn/2000-01-01-start.md

@@ -144,7 +144,7 @@ It depends on the stack:
 * `scalingo-24`: [2.6.x](https://packages.ubuntu.com/noble/amd64/openvpn)
 * `scalingo-26`: [2.7.x](https://packages.ubuntu.com/resolute/amd64/openvpn)
 
-_[More information about stacks]({% post_url platform/internals/stacks/2000-01-01-stacks %})_
+_[More information about stacks]({% post_url platform/internals/stacks/2000-01-01-overview %})_
 
 ### I would like to configure the DNS with the `dhcp-option` configuration, is it possible?
 

src/_posts/languages/go/2000-01-01-start.md

@@ -1,7 +1,7 @@
 ---
 title: Go
 nav: Introduction
-modified_at: 2026-06-16 00:00:00
+modified_at: 2026-06-22 00:00:00
 tags: go
 index: 1
 ---
@@ -14,11 +14,11 @@ The Go programming language is supported.
 
 The following versions of Go are available:
 
-| Go Version  | `scalingo-22` ([EOL]) | `scalingo-24`   | `scalingo-26`   |
-| ----------: | --------------------: | --------------: | --------------: |
-| **`1.26`** | up to `1.26.4`         | up to `1.26.4`  | up to `1.26.4`  |
-| **`1.25`** | up to `1.25.11`        | up to `1.25.11` | up to `1.25.11` |
-| **`1.24`** | up to `1.24.13`        | up to `1.24.13` | up to `1.24.13` |
+| Go Version | {% scalingo 22 %} | {% scalingo 24 %} | {% scalingo 26 %} |
+| ---------: | ----------------: | ----------------: | ----------------: |
+| **`1.26`** | up to `1.26.4`    | up to `1.26.4`    | up to `1.26.4`    |
+| **`1.25`** | up to `1.25.11`   | up to `1.25.11`   | up to `1.25.11`   |
+| **`1.24`** | up to `1.24.13`   | up to `1.24.13`   | up to `1.24.13`   |
 
 The default Go version on all stacks is the latest `go1.25` version.
 
@@ -88,5 +88,5 @@ limit for the full process memory. For more details, refer to the
 
 More information at [https://github.com/Scalingo/go-buildpack](https://github.com/Scalingo/go-buildpack).
 
-[go-runtime-env]: https://pkg.go.dev/runtime#hdr-Environment_Variables
-[EOL]: {% post_url platform/internals/stacks/2000-01-01-stacks %}#stack-end-of-life
+
+[EOL]: {% post_url platform/internals/stacks/2000-01-01-overview %}#lifecycle

src/_posts/languages/java/2000-01-01-start.md

@@ -1,7 +1,7 @@
 ---
 title: Java on Scalingo
 nav: Introduction
-modified_at: 2026-05-26 00:00:00
+modified_at: 2026-06-22 00:00:00
 tags: java
 index: 1
 ---
@@ -14,14 +14,14 @@ Java is officially supported on Scalingo
 
 The following Java versions are available:
 
-| Java SE Version | `scalingo-22` ([EOL]) | `scalingo-24`     | `scalingo-26`     |
-| --------------: | --------------------: | ----------------: | ----------------: |
-| **`26`**        | up to `26.0.1`        | up to `26.0.1`    | up to `26.0.1`    |
-| **`25 (LTS)`**  | up to `25.0.3`        | up to `25.0.3`    | up to `25.0.3`    |
-| **`21 (LTS)`**  | up to `21.0.11`       | up to `21.0.11`   | up to `21.0.11`   |
-| **`17 (LTS)`**  | up to `17.0.19`       | up to `17.0.19`   | up to `17.0.19`   |
-| **`11 (LTS)`**  | up to `11.0.31`       | up to `11.0.31`   | up to `11.0.31`   |
-| **`8 (LTS)`**   | up to `1.8.0_492`     | up to `1.8.0_492` | up to `1.8.0_492` |
+| Java SE Version | {% scalingo 22 %} | {% scalingo 24 %} | {% scalingo 26 %} |
+| --------------: | ----------------: | ----------------: | ----------------: |
+| **`26`**        | up to `26.0.1`    | up to `26.0.1`    | up to `26.0.1`    |
+| **`25 (LTS)`**  | up to `25.0.3`    | up to `25.0.3`    | up to `25.0.3`    |
+| **`21 (LTS)`**  | up to `21.0.11`   | up to `21.0.11`   | up to `21.0.11`   |
+| **`17 (LTS)`**  | up to `17.0.19`   | up to `17.0.19`   | up to `17.0.19`   |
+| **`11 (LTS)`**  | up to `11.0.31`   | up to `11.0.31`   | up to `11.0.31`   |
+| **`8 (LTS)`**   | up to `1.8.0_492` | up to `1.8.0_492` | up to `1.8.0_492` |
 
 For Java SE 8, the JDK version is numbered `1.8`.
 
@@ -213,4 +213,4 @@ More information at
 [https://github.com/Scalingo/java-buildpack](https://github.com/Scalingo/java-buildpack).
 
 [java-command]: https://docs.oracle.com/en/java/javase/25/docs/specs/man/java.html
-[EOL]: {% post_url platform/internals/stacks/2000-01-01-stacks %}#stack-end-of-life
+[EOL]: {% post_url platform/internals/stacks/2000-01-01-overview %}#lifecycle

src/_posts/languages/nodejs/2000-01-01-start.md

@@ -1,7 +1,7 @@
 ---
 title: Node.js
 nav: Introduction
-modified_at: 2026-06-16 12:00:00
+modified_at: 2026-06-22 12:00:00
 tags: nodejs
 index: 1
 ---
@@ -20,11 +20,11 @@ The file `package.json` should be present at the root of the project.
 
 The following Node.js versions are available:
 
-| Node.js version | `scalingo-22` ([EOL]) | `scalingo-24`   | `scalingo-26`   |
-| --------------: | --------------------: | --------------: | --------------: |
-| `v26`           | up to `26.3.0`        | up to `26.3.0`  | up to `26.3.0`  |
-| `v24` (LTS)     | up to `24.16.0`       | up to `24.16.0` | up to `24.16.0` |
-| `v22` (LTS)     | up to `22.22.3`       | up to `22.22.3` | up to `22.22.3` |
+| Node.js version | {% scalingo 22 %} | {% scalingo 24 %} | {% scalingo 26 %} |
+| --------------: | ----------------: | ----------------: | ----------------: |
+| `v26`           | up to `26.3.0`    | up to `26.3.0`    | up to `26.3.0`    |
+| `v24` (LTS)     | up to `24.16.0`   | up to `24.16.0`   | up to `24.16.0`   |
+| `v22` (LTS)     | up to `22.22.3`   | up to `22.22.3`   | up to `22.22.3`   |
 
 {% include scalingo_22_deprecation_note.md %}
 
@@ -467,4 +467,4 @@ web: node server.js
 ```
 
 [nodejs-memory-guide]: https://nodejs.org/learn/diagnostics/memory/understanding-and-tuning-memory
-[EOL]: {% post_url platform/internals/stacks/2000-01-01-stacks %}#stack-end-of-life
+[EOL]: {% post_url platform/internals/stacks/2000-01-01-overview %}#lifecycle

src/_posts/languages/php/2000-01-01-dependencies.md

@@ -115,4 +115,4 @@ development dependencies installed (e.g. to debug your app).
 In addition to the `--[no-]dev` flag, the platform always runs
 `composer install` with the `--prefer-dist` and `--optimize-autoloader` flags.
 
-[EOL]: {% post_url platform/internals/stacks/2000-01-01-stacks %}#stack-end-of-life
+[EOL]: {% post_url platform/internals/stacks/2000-01-01-overview %}#lifecycle

src/_posts/languages/php/2000-01-01-start.md

@@ -37,12 +37,12 @@ parameters like `upload_max_filesize` or `post_max_size`.
 
 The following PHP versions are available:
 
-| PHP Version | `scalingo-22` ([EOL]) | `scalingo-24`  | `scalingo-26`  |
-| ----------: | --------------------: | -------------: | -------------: |
-| **`8.5`**   | up to `8.5.7`         | up to `8.5.7`  | up to `8.5.7`  |
-| **`8.4`**   | up to `8.4.22`        | up to `8.4.22` | up to `8.4.22` |
-| **`8.3`**   | up to `8.3.31`        | up to `8.3.31` | up to `8.3.31` |
-| **`8.2`**   | up to `8.2.31`        | up to `8.2.31` | up to `8.2.31` |
+| PHP Version | {% scalingo 22 %} | {% scalingo 24 %} | {% scalingo 26 %} |
+| ----------: | ----------------: | ----------------: | ----------------: |
+| **`8.5`**   | up to `8.5.7`     | up to `8.5.7`     | up to `8.5.7`     |
+| **`8.4`**   | up to `8.4.22`    | up to `8.4.22`    | up to `8.4.22`    |
+| **`8.3`**   | up to `8.3.31`    | up to `8.3.31`    | up to `8.3.31`    |
+| **`8.2`**   | up to `8.2.31`    | up to `8.2.31`    | up to `8.2.31`    |
 
 {% include scalingo_22_deprecation_note.md %}
 
@@ -453,5 +453,3 @@ location / {
   try_files $uri $uri/ /index.php?$args;
 }
 ```
-
-[EOL]: {% post_url platform/internals/stacks/2000-01-01-stacks %}#stack-end-of-life

src/_posts/languages/python/2000-01-01-start.md

@@ -1,7 +1,7 @@
 ---
 title: Python
 nav: Introduction
-modified_at: 2026-06-10 12:00:00
+modified_at: 2026-06-22 12:00:00
 tags: python
 index: 1
 ---
@@ -21,12 +21,12 @@ your app.
 
 The following versions of Python are available:
 
-| Python Version | `scalingo-22` ([EOL]) | `scalingo-24`   | `scalingo-26`   |
-| -------------- | -------------------:  | --------------: | --------------: |
-| **`3.14`**     | up to `3.14.5`        | up to `3.14.5`  | up to `3.14.5`  |
-| **`3.13`**     | up to `3.13.13`       | up to `3.13.13` | up to `3.13.13` |
-| **`3.12`**     | up to `3.12.13`       | up to `3.12.13` | up to `3.12.13` |
-| **`3.11`**     | up to `3.11.15`       | up to `3.11.15` | up to `3.11.15` |
+| Python Version | {% scalingo 22 %} | {% scalingo 24 %} | {% scalingo 26 %} |
+| -------------- | ---------------:  | ----------------: | ----------------: |
+| **`3.14`**     | up to `3.14.5`    | up to `3.14.5`    | up to `3.14.5`    |
+| **`3.13`**     | up to `3.13.13`   | up to `3.13.13`   | up to `3.13.13`   |
+| **`3.12`**     | up to `3.12.13`   | up to `3.12.13`   | up to `3.12.13`   |
+| **`3.11`**     | up to `3.11.15`   | up to `3.11.15`   | up to `3.11.15`   |
 
 {% include scalingo_22_deprecation_note.md %}
 
@@ -131,4 +131,4 @@ For further details about this calculation, please see the [WEB_CONCURRENCY.sh](
 
 To override the automatically defined value, set the `WEB_CONCURRENCY` environment variable to the desired value.
 
-[EOL]: {% post_url platform/internals/stacks/2000-01-01-stacks %}#stack-end-of-life
+[EOL]: {% post_url platform/internals/stacks/2000-01-01-overview %}#lifecycle

src/_posts/languages/ruby/2000-01-01-start.md

@@ -81,11 +81,11 @@ $ git push scalingo master
 
 ### Availability
 
-| Ruby Version | `scalingo-22` ([EOL]) | `scalingo-24`  | `scalingo-26`  |
-| -----------: | --------------------: | -------------: | -------------: |
-| **`4.0`**    | up to `4.0.5`         | up to `4.0.5`  | up to `4.0.5`  |
-| **`3.4`**    | up to `3.4.9`         | up to `3.4.9`  | up to `3.4.9`  |
-| **`3.3`**    | up to `3.3.11`        | up to `3.3.11` | up to `3.3.11` |
+| Ruby Version | {% scalingo 22 %} | {% scalingo 24 %} | {% scalingo 26 %} |
+| -----------: | ----------------: | ----------------: | ----------------: |
+| **`4.0`**    | up to `4.0.5`     | up to `4.0.5`     | up to `4.0.5`     |
+| **`3.4`**    | up to `3.4.9`     | up to `3.4.9`     | up to `3.4.9`     |
+| **`3.3`**    | up to `3.3.11`    | up to `3.3.11`    | up to `3.3.11`    |
 
 {% include scalingo_22_deprecation_note.md %}
 
@@ -176,4 +176,4 @@ environment variable to the desired value.
 
 
 [web_concurrency_file]: https://github.com/Scalingo/ruby-buildpack/blob/master/lib/language_pack/ruby.rb
-[EOL]: {% post_url platform/internals/stacks/2000-01-01-stacks %}#stack-end-of-life
+[EOL]: {% post_url platform/internals/stacks/2000-01-01-overview %}#lifecycle

src/_posts/platform/app/2000-01-01-review-apps.md

@@ -67,7 +67,7 @@ application is a child application.
 
 Child applications clone some information from the parent app:
 * the [container formation]({% post_url platform/app/scaling/2000-01-01-scaling %})
-* the [stack]({% post_url platform/internals/stacks/2000-01-01-stacks %})
+* the [stack]({% post_url platform/internals/stacks/2000-01-01-overview %})
 * the [environment variables]({% post_url platform/app/2000-01-01-environment %})
 * the databases and addons: including version and plans (can be overridden in `scalingo.json`), but _excluding_ the content of the databases.
 * the collaborators

src/_posts/platform/app/2000-01-01-tailscale.md

@@ -34,9 +34,9 @@ tailscale
 :repo:deb [trusted=yes] https://pkgs.tailscale.com/stable/ubuntu [dist] main
 ```
 
-Replace `[dist]` with the codename of the [stack]({% post_url platform/internals/stacks/2000-01-01-stacks %}) you are using:
-* `resolute` for `scalingo-26`
-* `noble` for `scalingo-24` (default)
+Replace `[dist]` with the codename of the [stack] you are using:
+* `resolute` for `scalingo-26` (default)
+* `noble` for `scalingo-24`
 * `jammy` for `scalingo-22`
 
 ## Step 3: Set TAILSCALE_AUTHKEY Environment Variable
@@ -99,3 +99,6 @@ You can verify the connection by running a [one-off container]({% post_url platf
 {% note %}
 The `ALL_PROXY` environment variable directs software that respects it (like `curl`) to use the local SOCKS5 proxy provided by Tailscale.
 {% endnote %}
+
+
+[stack]: {% post_url platform/internals/stacks/2000-01-01-overview %}

src/_posts/platform/deployment/2000-01-01-deploy-java-jar-war.md

@@ -119,4 +119,4 @@ Even though we still support this version, we strongly advise against using the
 please consider migrating to a more recent version.
 {% endnote %}
 
-[EOL]: {% post_url platform/internals/stacks/2000-01-01-stacks %}#stack-end-of-life
+[EOL]: {% post_url platform/internals/stacks/2000-01-01-overview %}#lifecycle

src/_posts/platform/deployment/buildpacks/2000-01-01-apt.md

@@ -14,7 +14,7 @@ installing additional packages using the `apt` package manager.
 
 Details about the default environment can be found on the following page:
 [Scalingo Builder - Our base Docker image]({% post_url
-platform/internals/stacks/2000-01-01-stacks %})
+platform/internals/stacks/2000-01-01-overview %})
 
 ## Set up this buildpack for your application
 
@@ -67,7 +67,7 @@ http://downloads.sourceforge.net/project/wkhtmltopdf/0.12.1/wkhtmltox-0.12.1_lin
 
 {% warning %}
 You have to make sure the chosen packages are compatible with the stack base distribution.
-See [our documentation page]({% post_url platform/internals/stacks/2000-01-01-stacks %})
+See [our documentation page]({% post_url platform/internals/stacks/2000-01-01-overview %})
 to see how to change your stack and see which is the default base distribution.
 {% endwarning %}
 

src/_posts/platform/deployment/buildpacks/2000-01-01-jemalloc.md

@@ -75,4 +75,4 @@ variable, like so:
 scalingo env-set JEMALLOC_VERSION=4.5.0
 ```
 
-[EOL]: {% post_url platform/internals/stacks/2000-01-01-stacks %}#stack-end-of-life
+[EOL]: {% post_url platform/internals/stacks/2000-01-01-overview %}#lifecycle

src/_posts/platform/deployment/buildpacks/2000-01-01-locale.md

@@ -13,7 +13,7 @@ at installing additional language packs.
 
 Details about the default environment can be found on the following page:
 [Scalingo Builder - Our base Docker image]({% post_url
-platform/internals/stacks/2000-01-01-stacks %})
+platform/internals/stacks/2000-01-01-overview %})
 
 ## Set up this buildpack for your application