# infra > OSS-Fuzz project infrastructure Core infrastructure: * [`base-images`](base-images/) - docker images for building fuzz targets & corresponding jenkins pipeline. Continuous Integration infrastructure: * [`libfuzzer-pipeline.groovy`](libfuzzer-pipeline.groovy/) - jenkins pipeline that runs for each OSS-Fuzz project. * [`docker-cleanup`](docker-cleanup/) - jenkins pipeline to clean stale docker images & processes. * [`push-images`](push-images/) - jenkins pipeline to push built base images. * [`jenkins-cluster`](jenkins-cluster/) - kubernetes cluster definition for our jenkins-based build (not operational yet, [#10](https://github.com/google/oss-fuzz/issues/10)). ## helper.py > script to automate common docker operations | Command | Description | |---------|------------- | `generate` | Generates skeleton files for a new project | | `build_image` | Builds a docker image for a given project | | `build_fuzzers` | Builds fuzz targets for a given project | | `run_fuzzer` | Runs a fuzz target in a docker container | | `coverage` | Runs fuzz target(s) in a docker container and generates a code coverage report. See [Code Coverage doc](https://google.github.io/oss-fuzz/advanced-topics/code-coverage/) | | `reproduce` | Runs a testcase to reproduce a crash | | `shell` | Starts a shell inside the docker image for a project |