ci: start scaffolding a build workflow

.github/workflows/build.yaml

@@ -0,0 +1,40 @@
+name: Build
+
+on:
+  push:
+    branches-ignore:
+      - rebase-pull-request**
+      - cherry-pick-rebase-pull-request**
+  pull_request:
+
+concurrency:
+  group: '${{ github.workflow }} @ ${{ github.ref }}'
+  cancel-in-progress: true
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+      - name: Setup Python
+        uses: actions/setup-python@v4
+        with:
+          python-version: 3.12
+      - name: Install dependencies
+        run: |
+          DEBIAN_FRONTEND=noninteractive sudo apt-get update -y
+          sudo apt-get install --no-install-recommends -y \
+            icoutils \
+            flatpak \
+            flatpak-builder
+          flatpak remote-add --user --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo
+      - name: Cache Flatpak builder
+        id: cache-flatpak-builder
+        uses: actions/cache@v3
+        with:
+          path: .flatpak-builder
+          key: ${{ runner.os }}-flatpak-builder-${{ hashFiles('com.jagex.Launcher.yaml') }}
+      - name: Build Flatpak
+        run: |
+          ./build.sh

build.sh

@@ -33,8 +33,27 @@ if [[ ${HAS_NVIDIA} -eq 1 ]]; then
         org.freedesktop.Platform.GL32.nvidia-${NVIDIA_VERISON}/x86_64
 fi
 
-flatpak-builder --user --force-clean out com.jagex.Launcher.yaml
+flatpak-builder --user --ccache --force-clean out com.jagex.Launcher.yaml
 flatpak build-export export out
-flatpak build-bundle -vv export com.jagex.Launcher.flatpak com.jagex.Launcher --repo-url=https://flatpak.mcswain.dev --runtime-repo=https://flathub.org/repo/flathub.flatpakrepo
+
+flatpak build-bundle -vv export com.jagex.Launcher.flatpak com.jagex.Launcher --repo-url=https://flatpak.mcswain.dev --runtime-repo=https://flathub.org/repo/flathub.flatpakrepo &
+PID=$!
+
+COUNTER=0
+# Timeout after 1 hour
+MAX_COUNTER=3600
+while kill -0 $PID 2> /dev/null; do
+    NUM_DOT=$((COUNTER%5))
+    DOTS=$(printf '.%.0s' $(seq 1 $NUM_DOT))
+    # Overwrite the line
+    echo -en "\r                         \r"
+    echo "Exporting flatpak${DOTS}"
+    COUNTER=$((COUNTER+1))
+    if [[ ${COUNTER} -gt ${MAX_COUNTER} ]]; then
+        echo "Timed out after 1 hour"
+        exit 1
+    fi
+    sleep 1
+done
 
 echo "Built flatpak to com.jagex.Launcher.flatpak"