Add Ubuntu 26.04 "Resolute Racoon" build (#6766)

* Create 26.04 Dockerfile

* Update desktop-build.yml

* Update release_template.md

* Add ca-certificates package to build

.ci/Ubuntu26.04/Dockerfile

@@ -0,0 +1,29 @@
+FROM ubuntu:26.04
+
+RUN apt-get update && \
+    DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends \
+        build-essential \
+        ca-certificates \
+        ccache \
+        clang-format \
+        cmake \
+        file \
+        g++ \
+        git \
+        libgl-dev \
+        liblzma-dev \
+        libmariadb-dev-compat \
+        libprotobuf-dev \
+        libqt6multimedia6 \
+        libqt6sql6-mysql \
+        ninja-build \
+        protobuf-compiler \
+        qt6-image-formats-plugins \
+        qt6-l10n-tools \
+        qt6-multimedia-dev \
+        qt6-svg-dev \
+        qt6-tools-dev \
+        qt6-tools-dev-tools \
+        qt6-websockets-dev \
+    && apt-get clean \
+    && rm -rf /var/lib/apt/lists/*

.ci/release_template.md

@@ -17,6 +17,7 @@ Available pre-compiled binaries for installation:
    • <kbd>macOS 13+</kbd> <sub><i>Ventura</i></sub> <sub>Intel</sub>
 
   <b>Linux</b>
+   • <kbd>Ubuntu 26.04 LTS</kbd> <sub><i>Resolute Racoon</i></sub>
    • <kbd>Ubuntu 24.04 LTS</kbd> <sub><i>Noble Numbat</i></sub>
    • <kbd>Ubuntu 22.04 LTS</kbd> <sub><i>Jammy Jellyfish</i></sub>
    • <kbd>Debian 13</kbd> <sub><i>Trixie</i></sub>

.github/workflows/desktop-build.yml

@@ -142,11 +142,16 @@ jobs:
           - distro: Ubuntu
             version: 22.04
             package: DEB
+            test: skip    # Running tests on all distros is superfluous
 
           - distro: Ubuntu
             version: 24.04
             package: DEB
 
+          - distro: Ubuntu
+            version: 26.04
+            package: DEB
+
     name: ${{matrix.distro}} ${{matrix.version}}
     needs: configure
     runs-on: ubuntu-latest