client: plugins: catch lib_docker ctor (Tor plugin)

- Catch if lib_docker constructor fails
- Add note regarding construction

client/plugins/docker/tor.bash

@@ -26,7 +26,10 @@ source "${DOCKER_FINANCE_CLIENT_REPO}/client/src/docker/lib/lib_docker.bash"
 
 [[ -z "$global_platform" || -z "$global_arg_delim_1" || -z "$global_user" || -z "$global_tag" ]] && lib_utils::die_fatal
 instance="${global_platform}${global_arg_delim_1}${global_user}:${global_tag}"
-lib_docker::docker "$instance" # NOTE: "constructor" only needed if calling library directly
+
+# Initialize "constructor"
+# NOTE: "constructor" only needed if calling library directly
+lib_docker::docker "$instance" || lib_utils::die_fatal
 
 #
 # Implementation