.gitlab-ci.yml: override locale to en_US.UTF-8 during build.

Author: greenrobot-team

.gitlab-ci.yml

@@ -31,7 +31,10 @@ stages:
 
 test:
   stage: test
-  tags: [ docker, x64 ]
+  tags: [ docker, linux, x64 ]
+  variables:
+    # CentOS 7 defaults to ASCII, use a UTF-8 compatible locale so UTF-8 tests that interact with file system work.
+    LC_ALL: "en_US.UTF-8"
   before_script:
     # Print Gradle and JVM version info
     - ./gradlew -version
@@ -75,7 +78,10 @@ test-macos:
 # Address sanitizer is only available on Linux runners (see script).
 .test-asan-template:
   extends: .test-template
-  tags: [ docker, x64 ]
+  tags: [ docker, linux, x64 ]
+  variables:
+    # CentOS 7 defaults to ASCII, use a UTF-8 compatible locale so UTF-8 tests that interact with file system work.
+    LC_ALL: "en_US.UTF-8"
   script:
     # Note: do not run check task as it includes SpotBugs.
     - ./ci/test-with-asan.sh $GITLAB_REPO_ARGS $VERSION_ARGS clean :tests:objectbox-java-test:test