Fix linux build

.github/workflows/build.yml

@@ -48,23 +48,19 @@ jobs:
 
   linux:
     name: 'Linux'
-    runs-on: ubuntu-latest
-    container: s1lentq/linux86buildtools:latest
+    runs-on: ubuntu-20.04
     outputs:
       app-version: ${{ steps.app-version.outputs.version }}
 
-    env:
-      ACTIONS_ALLOW_USE_UNSECURE_NODE_VERSION: true
-
     steps:
       - name: Checkout
         uses: actions/checkout@v3
         with:
           fetch-depth: 0
 
-      - name: Build using Intel C++ Compiler 19.0
+      - name: Build
         run: |
-          rm -rf build && CC=icc CXX=icpc cmake -B build && cmake --build build -j8
+          rm -rf build && CC=gcc CXX=g++ cmake -B build && cmake --build build -j8
 
       - name: Reading appversion.h
         id: app-version