tests(dist): try running on self-hosted runner

Author: csegarragonz

.github/workflows/tests.yml

@@ -139,8 +139,11 @@ jobs:
   dist-tests:
     if: github.event.pull_request.draft == false
     needs: [conan-cache]
-    runs-on: ubuntu-latest
+    runs-on: self-hosted
     env:
+      # Make a unique per-job cluster name, so that different instances can
+      # run in parallel
+      COMPOSE_PROJECT_NAME: faabric-gha-${{ github.job }}-${{ github.run_id }}-${{ github.run_attempt }}
       CONAN_CACHE_MOUNT_SOURCE: ~/.conan/
     steps:
       - name: "Log in to ACR"
@@ -162,6 +165,9 @@ jobs:
       - name: "Print planner logs"
         if: always()
         run: docker compose logs planner
+      - name: "Chown all files to avoid docker-related root-owned files"
+        if: always()
+        run: sudo chown -R $(id -u):$(id -g) .
 
   examples:
     if: github.event.pull_request.draft == false

tests/dist/mpi/test_multiple_mpi_worlds.cpp

@@ -127,7 +127,7 @@ TEST_CASE_METHOD(MpiDistTestsFixture,
 
 TEST_CASE_METHOD(MpiDistTestsFixture,
                  "Test migrating two MPI applications in parallel",
-                 "[.]")
+                 "[mpi]")
 {
     // Set the slots for the first request: 2 locally and 2 remote
     int worldSize = 4;