Layers
FROM ubuntu: latest
RUN apt-get update \
&& apt-get install build-essentials
COPY main.c Makefile /src/
WORKDIR /src
RUN make build
Cache?
Explanation
The image shows a set of Dockerfile instructions and whether they can be cached. It seems like the first two commands, `FROM ubuntu:latest` and `RUN apt-get update && apt-get install build-essentials`, are cacheable, while the remaining commands, `COPY main.c Makefile /src/`, `WORKDIR /src`, and `RUN make build` are not.