Inject version into /about page

Author: ku1ik

.github/workflows/publish.yml

@@ -31,8 +31,12 @@ jobs:
           [[ "${{ github.ref_type }}" == "tag" ]] && IMAGE_TAG=$(echo $IMAGE_TAG | sed -e 's/^v//')
           # Use Docker `latest` tag convention
           [ "$IMAGE_TAG" == "main" ] && IMAGE_TAG=latest
+          VERSION="${{ github.sha }}"
+          [[ "${{ github.ref_type }}" == "tag" ]] && VERSION="${{ github.ref_name }}"
+          [[ "${{ github.ref_type }}" == "branch" ]] && VERSION="${{ github.ref_name }}-${{ github.sha }}"
           echo IMAGE_ID=$IMAGE_ID >> $GITHUB_OUTPUT
           echo IMAGE_TAG=$IMAGE_TAG >> $GITHUB_OUTPUT
+          echo VERSION=$VERSION >> $GITHUB_OUTPUT
 
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
@@ -46,6 +50,8 @@ jobs:
 
       - name: Build image
         uses: docker/build-push-action@v5
+        env:
+          VERSION: "${{ steps.vars.outputs.VERSION }}"
         with:
           context: .
           push: true

config/config.exs

@@ -7,6 +7,8 @@
 # General application configuration
 import Config
 
+config :asciinema, version: System.get_env("VERSION")
+
 config :asciinema, :session_opts,
   store: :cookie,
   key: "_asciinema_key",

lib/asciinema_web/controllers/page_controller.ex

@@ -9,7 +9,8 @@ defmodule AsciinemaWeb.PageController do
       "about.html",
       page_title: "About",
       contact_email_address: Application.get_env(:asciinema, :contact_email_address),
-      server_name: AsciinemaWeb.Endpoint.host()
+      server_name: AsciinemaWeb.Endpoint.host(),
+      server_version: Application.get_env(:asciinema, :version)
     )
   end
 

lib/asciinema_web/controllers/page_html/about.html.heex

@@ -1,8 +1,13 @@
 <h1>About <%= @server_name %></h1>
 
 <p>
-  <strong><%= @server_name %></strong> is a platform for hosting and sharing
-  terminal session recordings, powered by <a href="https://docs.asciinema.org/manual/server/">asciinema server</a>.
+  <strong><%= @server_name %></strong>
+  is a platform for hosting and sharing
+  terminal session recordings, powered by
+  <a href="https://docs.asciinema.org/manual/server/">asciinema server</a>
+  <%= if @server_version do %>
+    (<%= @server_version %>)
+  <% end %>.
 </p>
 
 <%= if @contact_email_address do %>