fixup! fixup! fixup! [eclipse-wakaamaGH-494] ci: Build and test on AR…

…Mv6 architecture

.github/workflows/multiarch.yaml

@@ -11,7 +11,7 @@ jobs:
       matrix:
         # Add armv7, aarch64 and other architectures once this is resolved:
         # https://github.com/uraimo/run-on-arch-action/issues/38
-        arch: ["armv7"]
+        arch: ["armv6" "armv7"]
     steps:
     - name: Checkout code including full history and submodules
       uses: actions/checkout@v2
@@ -23,8 +23,9 @@ jobs:
       id: runcmd
       with:
         arch: ${{ matrix.arch }}
-        distro: ubuntu18.04
+        distro: buster
         githubToken: ${{ github.token }}
+        shell: /bin/sh
         install: |
           sudo apt update
           sudo apt install libcunit1-dev ninja-build unzip wget build-essential