.github: disable kernel.apparmor_restrict_unprivileged_userns

Required to be allowed to use unshare in test(s), even if --map-auto.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>

Author: troglobit

.github/workflows/build.yml

@@ -24,18 +24,17 @@ jobs:
       MAKEFLAGS: -j3
       CC: ${{ matrix.compiler }}
     steps:
-      - name: Install dependencies
-        run: |
-          sudo apt-get -y update
-          sudo apt-get -y install tree
       - uses: actions/checkout@v2
+      - name: Enable unprivileged userns (unshare)
+        run: |
+          sudo sysctl kernel.apparmor_restrict_unprivileged_userns=0
       - name: Build
         run: |
           make
       - name: Install to ~/tmp and Inspect
         run: |
           DESTDIR=~/tmp make install-strip
-          tree ~/tmp
+          ls -lR ~/tmp
           ldd ~/tmp/usr/local/bin/mping
           size ~/tmp/usr/local/bin/mping
           ~/tmp/usr/local/bin/mping -h