CI: Add a job to run a nightly build on various Linux distros

.github/workflows/dev-container.yml

@@ -16,6 +16,9 @@ permissions:
   # Push images to GHCR.
   packages: write
 
+env:
+  FEDORA_VERSION: 41
+
 jobs:
   build:
     if: github.repository == 'LadybirdBrowser/ladybird'
@@ -32,9 +35,19 @@ jobs:
           username: ${{ github.repository_owner }}
           password: ${{ secrets.GITHUB_TOKEN }}
 
-      - name: Build Base Dev Container Image
+      - name: Build Ubuntu Base Dev Container Image
         uses: devcontainers/[email protected]
         with:
           imageName: ghcr.io/ladybirdbrowser/ladybird-devcontainer
           imageTag: base,latest
           push: always
+
+      - name: Build Fedora CI Dev Container Image
+        uses: devcontainers/[email protected]
+        env:
+          VERSION: ${{ env.FEDORA_VERSION }}
+        with:
+          imageName: ghcr.io/ladybirdbrowser/ladybird-ci-fedora
+          imageTag: ${{ env.FEDORA_VERSION }},latest
+          push: always
+          subFolder: .devcontainer/fedora-ci

.github/workflows/nightly-linux-distro.yml

@@ -0,0 +1,42 @@
+name: 'Nightly Linux Distro Builds'
+on:
+  push:
+    paths:
+      - '.devcontainer/**'
+      - 'vcpkg.json'
+
+  # Run daily at 02:30.
+  schedule:
+    - cron: '30 2 * * *'
+
+  # Allows you to run this workflow manually from the Actions tab on GitHub.
+  workflow_dispatch:
+
+permissions:
+  contents: read
+  packages: read
+
+jobs:
+  build:
+    if: github.repository == 'LadybirdBrowser/ladybird'
+    runs-on: ubuntu-latest
+    steps:
+
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Login to GitHub Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Run default build in Fedora container
+        uses: devcontainers/[email protected]
+        with:
+          cacheFrom: ghcr.io/ladybirdbrowser/ladybird-ci-fedora:latest
+          push: never
+          subFolder: .devcontainer/fedora-ci
+          runCmd: Meta/ladybird.sh test
+