Dockerize reads your project's real manifest files (package.json, pyproject.toml, go.mod, Cargo.toml, pom.xml, and more) to detect the stack, package manager, build step, listen port, and start command, then writes a secure multi-stage Dockerfile and a matching .dockerignore. The generated Dockerfile keeps compilers and dev dependencies out of the final image, pins small base images (distroless/scratch for static binaries, -slim otherwise), runs as a dedicated non-root user, and optimizes layer caching with lockfile-first installs. It offers to run docker build to verify the result actually works.