# base-runner > Base image for fuzzer runners. ```bash docker run -ti gcr.io/oss-fuzz/base-runner ``` ## Commands | Command | Description | |---------|-------------| | `reproduce ` | build all fuzz targets and run specified one with testcase `/testcase` and given options. | `run_fuzzer ` | runs specified fuzzer combining options with `.options` file | | `test_all` | runs every binary in `/out` as a fuzzer for a while to ensure it works. | # Examples - *Reproduce using latest OSS-Fuzz build:*
docker run --rm -ti -v <testcase_path>:/testcase gcr.io/oss-fuzz/$PROJECT_NAME reproduce <fuzzer_name>
   
- *Reproduce using local source checkout:*
    docker run --rm -ti -v <source_path>:/src/$PROJECT_NAME \
                        -v <testcase_path>:/testcase gcr.io/oss-fuzz/$PROJECT_NAME reproduce <fuzzer_name>