ci: [refactor] Extract build_dir constant in ci-test-each-commit-exec.py

.github/ci-test-each-commit-exec.py

@@ -21,11 +21,12 @@ def main():
     run(["git", "log", "-1"])
 
     num_procs = int(run(["nproc"], stdout=subprocess.PIPE).stdout)
+    build_dir = "ci_build"
 
     run([
         "cmake",
         "-B",
-        "build",
+        build_dir,
         "-Werror=dev",
         # Use clang++, because it is a bit faster and uses less memory than g++
         "-DCMAKE_C_COMPILER=clang",
@@ -41,19 +42,19 @@ def main():
         # Tolerate unused member functions in intermediate commits in a pull request
         "-DCMAKE_CXX_FLAGS=-Wno-error=unused-member-function",
     ])
-    run(["cmake", "--build", "build", "-j", str(num_procs)])
+    run(["cmake", "--build", build_dir, "-j", str(num_procs)])
     run([
         "ctest",
         "--output-on-failure",
         "--stop-on-failure",
         "--test-dir",
-        "build",
+        build_dir,
         "-j",
         str(num_procs),
     ])
     run([
         sys.executable,
-        "./build/test/functional/test_runner.py",
+        f"./{build_dir}/test/functional/test_runner.py",
         "-j",
         str(num_procs * 2),
         "--combinedlogslen=99999999",