Fix "Disable docker" step.

Author: fniephaus

.github/workflows/reachability-metadata.yml

@@ -106,13 +106,7 @@ jobs:
       - name: "Disable docker"
         run: |
           cd ${{ env.REACHABILITY_METADATA_PATH }}
-          sudo apt-get install openbsd-inetd
-          sudo bash -c "cat ./.github/workflows/discard-port.conf >> /etc/inetd.conf"
-          sudo systemctl start inetd
-          sudo mkdir /etc/systemd/system/docker.service.d
-          sudo bash -c "cat ./.github/workflows/dockerd.service > /etc/systemd/system/docker.service.d/http-proxy.conf"
-          sudo systemctl daemon-reload
-          sudo systemctl restart docker
+          bash ./.github/workflows/scripts/disable-docker.sh
       - name: "Run '${{ matrix.coordinates }}' tests"
         run: |
           cd ${{ env.REACHABILITY_METADATA_PATH }}