- `FROM`：Specify the base image.
- `RUN`：Execute commands in the container.
- `CMD`：Set the default command for the container.
- `ENTRYPOINT`：Configure the command to run when the container starts.
- `COPY`：Copy local files to the container.
- `ADD`：Copy local or remote files to the container, supporting automatic decompression.
- `ENV`：Set environment variables.
- `ARG`：Define build-time variables.
- `EXPOSE`：Declare the port that the container listens on at runtime.
- `WORKDIR`：Set the working directory.
- `USER`：Set the user to execute commands in the container.
- `LABEL`：Add metadata to the image.
- `VOLUME`：Create mount points for mounting data volumes or other containers.

What are the most commonly used instructions in a Dockerfile?