Fixed Docker compose root user problem #354

tools/tests/component-templates/fenics-adapter.yaml

@@ -1,5 +1,5 @@
 image: precice/fenics-adapter:{{ params["FENICS_ADAPTER_REF"] }}
-user: ${UID}:${UID}
+user: ${UID}:${GID}
 depends_on:    
   prepare:
     condition: service_completed_successfully

tools/tests/component-templates/nutils-adapter.yaml

@@ -1,5 +1,5 @@
 image: "ghcr.io/precice/openfoam-adapter:{{ params["openfoam-adapter-ref"] }}" # TODO: Update
-user: ${MY_UID}:${MY_GID}
+user: ${UID}:${GID}
 depends_on:    
   prepare:
     condition: service_completed_successfully

tools/tests/component-templates/openfoam-adapter.yaml

@@ -3,8 +3,8 @@ build:
   args:
     {% for key, value in build_args.items() %}
       - {{key}}={{value}}
-   {% endfor %}
-user: ${UID}:${UID}
+    {% endfor %}
+user: ${UID}:${GID}
 depends_on:    
   prepare:
     condition: service_completed_successfully

tools/tests/docker-compose.template.yaml

@@ -2,7 +2,7 @@ version: "3.9"
 services:
   prepare:
     image: ubuntu:latest
-    user: ${MY_UID}:${MY_GID}
+    user: ${UID}:${GID}
     volumes:
       - /etc/passwd:/etc/passwd:ro #TODO: Maybe move those into a more general section ? 
       - /etc/group:/etc/group:ro
@@ -15,7 +15,7 @@ services:
       sed -i 's|m2n:sockets from|m2n:sockets network=\"eth0\" from|g' precice-config.xml &&
       cat precice-config.xml"
 
-  
+
   {% for service in services %}
   {{ service }}:
     {{ services[service] |indent(4) }}

tools/tests/systemtests/Systemtest.py

@@ -72,9 +72,11 @@ class Systemtest:
     cmd_line_args: CmdLineArguments
     cases: Tuple[Case]
     params_to_use: Dict[str, str] = field(init=False)
+    env: Dict[str, str] = field(init=False)
 
     def __post_init__(self):
         self.__init_args_to_use()
+        self.env = {}
 
     def __init_args_to_use(self):
         """
@@ -173,6 +175,21 @@ def __copy_tools(self, run_directory: Path):
     def __cleanup(self):
         shutil.rmtree(self.run_directory)
 
+    def __get_uid_gid(self):
+        try:
+            uid = int(subprocess.check_output(["id", "-u"]).strip())
+            gid = int(subprocess.check_output(["id", "-g"]).strip())
+            return uid, gid
+        except Exception as e:
+            # Handle the exception if the 'id -u' or 'id -g' commands fail
+            # For example, you can return default values or raise an error.
+            print("Error getting group and user id: ", e)
+
+    def __write_env_file(self):
+        with open(self.system_test_dir / ".env", "w") as env_file:
+            for key, value in self.env.items():
+                env_file.write(f"{key}={value}\n")
+
     def _run_field_compare(self):
         """
         Writes the Docker Compose file to disk, executes docker-compose up, and handles the process output.
@@ -284,6 +301,10 @@ def run(self, run_directory: Path):
         self.__copy_tools(run_directory)
         std_out: List[str] = []
         std_err: List[str] = []
+        uid, gid = self.__get_uid_gid()
+        self.env["UID"] = uid
+        self.env["GID"] = gid
+        self.__write_env_file()
         docker_compose_result = self._run_tutorial()
         std_out.extend(docker_compose_result.stdout_data)
         std_err.extend(docker_compose_result.stderr_data)