feat: Testing just installing just with apt, not using action

.gitea/workflows/ci.yml

@@ -10,8 +10,20 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
     - uses: actions/checkout@v4
+    - name: Update
+      run: apt-get update && apt-get install -y wget gpg sudo bash
+    - name: Setup MPR.
+      shell: bash
+      run: |
+        wget -qO - 'https://proget.makedeb.org/debian-feeds/prebuilt-mpr.pub' \
+          | gpg --dearmor \
+          | sudo tee /usr/share/keyrings/prebuilt-mpr-archive-keyring.gpg 1> /dev/null \
+        && echo "deb [arch=all,$(dpkg --print-architecture) signed-by=/usr/share/keyrings/prebuilt-mpr-archive-keyring.gpg] \
+        https://proget.makedeb.org prebuilt-mpr $(lsb_release -cs)" \
+        | sudo tee /etc/apt/sources.list.d/prebuilt-mpr.list \
+        && sudo apt-get update
     - name: Setup just.
-      run: sudo apt install -y just
+      run: sudo apt-get install -y just
     # - name: Setup just.
     #   uses: https://git.housh.dev/actions/setup-just.git@v1.1
     - name: Setup QEMU