[LTP] [RFC PATCH] Add simple Alpine container

[Petr Vorel]

Hi all,

> Can be built with `docker/podman build .`. Then run with `podman -it
> run sh`. It contains Kirk in /opt/kirk. So `cd /opt/kirk && ./kirk -f
> ltp --run-suite syscalls` will run some tests.
> ---

> Hello,

> This builds and installs the LTP and Kirk inside an Alpine
> container. The idea is to use a standard container workflow to build
> and run the LTP from source. This helps with testing LTP itself and
> running tests inside a container.

> I'd like to add some container files to upstream to help with various
> workflows.

> The container has a number of problems:

> 1. If the Git directory has build artifacts in it, these are copied
>    into the container (.dockerignore may help)
> 2. The resulting container is quite large (possibly due to debug symbols)
> 3. Where should we put container files and how should we name them?
> 4. Making the slightest change results in a complete container rebuild

> Note that SUSE publishes a TW container based on our packaging system:
> https://build.opensuse.org/project/show/benchmark:ltp:devel
> https://registry.opensuse.org/cgi-bin/cooverview?srch_term=project%3D%5Ebenchmark+container%3D.*

> Also, for developing tests, it may be better to build the LTP outside
> of a container then copy in the files.

> +++ b/Containerfile
> @@ -0,0 +1,35 @@
> +FROM alpine:3.18 AS build

Maybe we could use ARG and ENV to allow user to decide which distro to use.
https://stackoverflow.com/questions/76091578/is-it-possible-to-use-an-environment-variable-in-the-from-instruction-of-a-docke
This way we could use various scripts in ci.

> +ARG LTPROOT=/opt/ltp
> +
> +RUN mkdir /build
> +WORKDIR /build
> +COPY . /build
> +RUN ./ci/alpine.sh
> +RUN ./build.sh -p $LTPROOT -i
> +
> +FROM alpine:3.18
Also here.

> +ARG LTPROOT=/opt/ltp
> +ARG KIRKROOT=/opt/kirk
> +
> +RUN apk add \
> +            acl \
> +            keyutils \
> +            libaio \
> +            libacl \
> +            libcap \
> +            libselinux \
> +            libsepol \
> +            libtirpc \
> +            numactl \
> +            openssl \
> +            py3-msgpack
This somehow emulates ./ci/alpine.sh (i.e. ./ci/alpine.sh has keyutils-dev,
which should install also keyutils as a dependency). We could add a mechanism to
ci scripts to install runtime dependencies (e.g. './ci/alpine.sh runtime' would
install all runtime dependencies, './ci/alpine.sh runtime-syscalls' would
install only runtime dependencies for syscalls).

But better would be to move runtime dependencies to kirk. But unfortunately this
part from original Cyril's perl based runltp-ng was not ported to new Andrea's
python based runltp-ng/kirk.

Kind regards,
Petr

> +
> +COPY --from=build $LTPROOT $LTPROOT
> +ENV LTPROOT=$LTPROOT
> +ENV PATH=$LTPROOT/testcases/bin:$LTPROOT/bin:$PATH
> +
> +RUN mkdir -p $KIRKROOT
> +COPY --from=build /build/tools/kirk $KIRKROOT
> +
> +RUN adduser -D -g "Unprivileged LTP user" ltp
> +RUN su ltp