diff --git a/.github/workflows/docker_ci.yml b/.github/workflows/docker_ci.yml
index 59da421..608dc37 100644
--- a/.github/workflows/docker_ci.yml
+++ b/.github/workflows/docker_ci.yml
@@ -9,6 +9,23 @@ env:
   IMAGE_NAME: epflxplore/nav
 
 jobs:
+  delete-untagged-images:
+    runs-on: ubuntu-latest
+
+    permissions:
+      contents: read
+      packages: write
+  
+    steps:
+      - name: Delete all untagged images from repository
+        uses: Chizkiyahu/delete-untagged-ghcr-action@v3
+        with:
+            token: ${{ secrets.PAT_TOKEN }}
+            repository_owner: ${{ github.repository_owner }}
+            owner_type: org
+            repository: ${{ github.repository }}
+            untagged_only: true
+
   build-and-push-image:
     runs-on: ubuntu-latest
 
@@ -30,6 +47,44 @@ jobs:
       packages: write
 
     steps:
+      - name: Check disk space
+        run: df . -h
+      
+      - name: Free disk space
+        run: |
+            sudo docker rmi $(docker image ls -aq) >/dev/null 2>&1 || true
+            sudo rm -rf \
+              /usr/share/dotnet /usr/local/lib/android /opt/ghc \
+              /usr/local/share/powershell /usr/share/swift /usr/local/.ghcup \
+              /usr/lib/jvm || true
+            echo "some directories deleted"
+            sudo apt install aptitude -y >/dev/null 2>&1
+            sudo aptitude purge aria2 ansible azure-cli shellcheck rpm xorriso zsync \
+              esl-erlang firefox gfortran-8 gfortran-9 google-chrome-stable \
+              google-cloud-sdk imagemagick \
+              libmagickcore-dev libmagickwand-dev libmagic-dev ant ant-optional kubectl \
+              mercurial apt-transport-https mono-complete libmysqlclient \
+              unixodbc-dev yarn chrpath libssl-dev libxft-dev \
+              libfreetype6 libfreetype6-dev libfontconfig1 libfontconfig1-dev \
+              snmp pollinate libpq-dev postgresql-client powershell ruby-full \
+              sphinxsearch subversion mongodb-org azure-cli microsoft-edge-stable \
+              -y -f >/dev/null 2>&1
+            sudo aptitude purge google-cloud-sdk -f -y >/dev/null 2>&1
+            sudo aptitude purge microsoft-edge-stable -f -y >/dev/null 2>&1 || true
+            sudo apt purge microsoft-edge-stable -f -y >/dev/null 2>&1 || true
+            sudo aptitude purge '~n ^mysql' -f -y >/dev/null 2>&1
+            sudo aptitude purge '~n ^php' -f -y >/dev/null 2>&1
+            sudo aptitude purge '~n ^dotnet' -f -y >/dev/null 2>&1
+            sudo apt-get autoremove -y >/dev/null 2>&1
+            sudo apt-get autoclean -y >/dev/null 2>&1
+            echo "some packages purged"
+
+      - name: Check disk space
+        run: |
+            sudo dpkg-query -Wf '${Installed-Size}\t${Package}\n' | sort -nr | head
+            df . -h
+            sudo du /usr/ -hx -d 4 --threshold=1G | sort -hr | head
+
       - name: Checkout repository
         uses: actions/checkout@v4