Fix GitHub Actions CI (#208)

- use ubuntu-latest since ubuntu-20.04 stopped working 2025-04-15
- sync changes made to .github/actions/tune-runner-vm/action.yml
- use latest setup-gradle

Author: lhotari

.github/actions/tune-runner-vm/action.yml

@@ -53,8 +53,8 @@ runs:
             # tune filesystem mount options, https://www.kernel.org/doc/Documentation/filesystems/ext4.txt
             # commit=999999, effectively disables automatic syncing to disk (default is every 5 seconds)
             # nobarrier/barrier=0, loosen data consistency on system crash (no negative impact to empheral CI nodes)
-            sudo mount -o remount,nodiscard,commit=999999,barrier=0 /
-            sudo mount -o remount,nodiscard,commit=999999,barrier=0 /mnt
+            sudo mount -o remount,nodiscard,commit=999999,barrier=0 / || true
+            sudo mount -o remount,nodiscard,commit=999999,barrier=0 /mnt || true
             # disable discard/trim at device level since remount with nodiscard doesn't seem to be effective
             # https://www.spinics.net/lists/linux-ide/msg52562.html
             for i in /sys/block/sd*/queue/discard_max_bytes; do
@@ -77,12 +77,6 @@ runs:
             # stop Azure Linux agent to save RAM
             sudo systemctl stop walinuxagent.service || true
           
-            # enable docker experimental mode which is
-            # required for using "docker build --squash" / "-Ddocker.squash=true"
-            daemon_json="$(sudo cat /etc/docker/daemon.json  | jq '.experimental = true')"
-            echo "$daemon_json" | sudo tee /etc/docker/daemon.json
-            # restart docker daemon
-            sudo systemctl restart docker
             echo '::endgroup::'
 
             # show memory

.github/workflows/ci.yml

@@ -32,7 +32,7 @@ concurrency:
 jobs:
   build:
 
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
 
     steps:
       - uses: actions/checkout@v4
@@ -47,7 +47,7 @@ jobs:
           java-version: 17
 
       - name: Setup Gradle
-        uses: gradle/actions/setup-gradle@v3
+        uses: gradle/actions/setup-gradle@v4
 
       - name: Check with Gradle
         run: ./gradlew rat licenseCheck javadoc check