Advanced Dockerfile Directives

Advanced Dockerfile directives enable the creation of sophisticated Docker images. Key directives covered include ENV for setting environment variables, ARG for build-time variables, WORKDIR to set the working directory, COPY and ADD for file inclusion, USER for setting default user, VOLUME for persistent storage, EXPOSE for port declaration, HEALTHCHECK for container health monitoring, and ONBUILD for deferred instructions in parent images. Examples demonstrating each directive are provided to showcase their usage and benefits.