Run Linux Github workflow on Ubuntu 22.04

Change-Id: I8a404c23d9f38bf9bd538edef933258814a91a67

.github/workflows/linux.yml

diff --git a/.github/workflows/linux.yml b/.github/workflows/linux.yml
index 034fa9f..445d995 100644
--- a/.github/workflows/linux.yml
+++ b/.github/workflows/linux.yml
@@ -5,7 +5,8 @@
 jobs:
   build:
     name: ${{matrix.os}}-${{matrix.build_type}}-${{matrix.lib}}-${{matrix.threading_model}}
-    runs-on: ${{matrix.os}}
+    runs-on: ubuntu-latest
+    container: ${{matrix.os}}
     defaults:
       run:
         shell: bash -e -o pipefail {0}
@@ -17,7 +18,8 @@
       fail-fast: true
       matrix:
         os:
-          - ubuntu-20.04
+          - ubuntu:20.04
+          - ubuntu:22.04
         build_type:
           - Release
         lib:
@@ -33,8 +35,8 @@
 
       - name: Setup Dependencies
         run: |
-          sudo apt-get update
-          sudo apt-get install -y \
+          apt-get update
+          apt-get install -y \
             build-essential \
             ccache \
             cmake \