diff --git a/.github/workflows/docker-build-on-release.yml b/.github/workflows/docker-build-on-release.yml
index 8bf87a6..dd8fdfb 100644
--- a/.github/workflows/docker-build-on-release.yml
+++ b/.github/workflows/docker-build-on-release.yml
@@ -28,6 +28,17 @@ jobs:
         with:
           images: fredericklab/capcalc
 
+      - name: Free disk space
+        run: | 
+          df -h
+          sudo rm -rf ${GITHUB_WORKSPACE}/.git
+          sudo swapoff -a
+          sudo rm -f /swapfile
+          sudo apt clean
+          sudo rm -rf /usr/share/dotnet
+          sudo rm -rf "$AGENT_TOOLSDIRECTORY"
+          df -h
+
       - name: Build and push
         id: docker_build
         uses: docker/build-push-action@v6