Mount volumes across another container?

.gitea/workflows/build.yaml

@@ -5,11 +5,15 @@ on: [push]
 jobs:
   Build-All:
     runs-on: ubuntu-latest
+    container:
+      volumes:
+        /opt/keys:/opt/keys
     steps:
       - name: check out code
         uses: actions/checkout@v4
         with:
           submodules: true
+      - run: pwd; ln -s /opt/keys .keys; ls -alh . /opt
       - name: Setup JDK
         uses: actions/setup-java@v3
         with:
@@ -20,6 +24,5 @@ jobs:
         with:
           packages: 'tools platform-tools build-tools;34.0.0 platforms;android-34 ndk;26.3.11579264'
       - run: sudo apt update && sudo apt install -y doxygen graphviz mingw-w64
-      - run: pwd; ln -s /opt/keys .keys; ls -alh . /opt
       - run: ANDROID_SDK=$HOME/.android/sdk make all -j`nproc` docs
       - run: docker build .