shellcheck/Dockerfile.multi-arch
Artur Klauser 499e0ceaba
Add multi-architecture Docker image build
* Adds a shell script with functions to install multi-architecture docker
  support, as well as build, deploy, and test the shellcheck docker images for
  the same set of architectures for which binaries were already built and
  deployed as tarballs.
* Hooks up the multi-architecture docker build, deploy, and test to the existing
  Travis CI/CD pipeline. It is organized as a separate stage which only runs if
  all previous steps in the already existing test stage succeed.
2020-01-07 21:05:17 +01:00

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# Alpine image
FROM alpine:latest AS alpine
LABEL maintainer="Vidar Holen <vidar@vidarholen.net>"
ARG tag
# Put the right binary for each architecture into place for the
# multi-architecture docker image.
RUN set -x; \
arch="$(uname -m)"; \
echo "arch is $arch"; \
if [ "${arch}" = 'armv7l' ]; then \
arch='armv6hf'; \
fi; \
url_base='https://shellcheck.storage.googleapis.com/'; \
tar_file="shellcheck-${tag}.linux.${arch}.tar.xz"; \
wget "${url_base}${tar_file}" -O - | tar xJf -; \
mv "shellcheck-${tag}/shellcheck" /bin/; \
rm -rf "shellcheck-${tag}"; \
ls -laF /bin/shellcheck
# ShellCheck image
FROM scratch
LABEL maintainer="Vidar Holen <vidar@vidarholen.net>"
WORKDIR /mnt
COPY --from=alpine /bin/shellcheck /bin/
ENTRYPOINT ["/bin/shellcheck"]