Fix Docker mount issue by using docker cp instead

- Change from --rm to -d to keep container running
- Use docker cp to copy .deb file from container to host
- This bypasses the Docker mount issue that was preventing file transfer
- Remove separate copy step since it's now integrated
- The .deb file should now be available on host filesystem

.forgejo/workflows/ci.yml

@@ -71,7 +71,9 @@ jobs:
           echo "Current directory before Docker run: $(pwd)"
           echo "Files in current directory before Docker run:"
           ls -la
-          docker run --rm -v $(pwd):/workspace bootupd-sdboot:latest bash -c "
+          
+          # Run Docker container and capture container ID
+          CONTAINER_ID=$(docker run -d -v $(pwd):/workspace bootupd-sdboot:latest bash -c "
             # Setup apt-cacher-ng inside container if available
             if timeout 5 curl -s --connect-timeout 3 \
               http://192.168.1.101:3142/acng-report.html > /dev/null 2>&1; then
@@ -124,28 +126,23 @@ jobs:
             ls -la /workspace/ && \
             echo \"Looking for .deb files in /workspace:\" && \
             ls -la /workspace/*.deb 2>/dev/null || echo \"No .deb files found in /workspace\"
-          "
+          ")
+          
+          # Wait for container to complete
+          echo "Waiting for container to complete..."
+          docker wait $CONTAINER_ID
+          
+          # Copy .deb file from container to host
+          echo "Copying .deb file from container to host..."
+          docker cp $CONTAINER_ID:/workspace/bootupd_0.1.0++_amd64.deb .
+          
+          # Clean up container
+          docker rm $CONTAINER_ID
+          
           echo "Current directory after Docker run: $(pwd)"
           echo "Files in current directory after Docker run:"
           ls -la
 
-      - name: Copy Debian package from Docker container
-        run: |
-          cd /tmp/bootupd-sdboot
-          echo "Copying .deb file from Docker container..."
-          
-          # The .deb file should be in the current directory due to Docker mount
-          # But let's verify and copy it explicitly if needed
-          if [ -f "bootupd_0.1.0++_amd64.deb" ]; then
-            echo "✅ .deb file found in current directory"
-            ls -la bootupd_0.1.0++_amd64.deb
-          else
-            echo "❌ .deb file not found in current directory"
-            echo "Files in current directory:"
-            ls -la
-            exit 1
-          fi
-
       - name: Upload to Forgejo Debian Registry
         run: |
           cd /tmp/bootupd-sdboot