Functions/template/crystal-http/Dockerfile

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FROM ghcr.io/openfaas/of-watchdog:0.9.11 as watchdog
FROM crystallang/crystal:1.8.2
COPY --from=watchdog /fwatchdog /usr/bin/fwatchdog
RUN chmod +x /usr/bin/fwatchdog
ARG ADDITIONAL_PACKAGE
RUN apt-get update \
&& apt-get install -qy --no-install-recommends ${ADDITIONAL_PACKAGE}
WORKDIR /home/app
COPY . .
COPY function/shard.yml shard.yml
RUN shards install
RUN crystal build main.cr -o handler --release
# Create a non-root user
RUN addgroup --system app \
&& adduser --system --ingroup app app
RUN chown app:app -R /home/app
USER app
WORKDIR /home/app
ENV fprocess="./handler"
EXPOSE 8080
HEALTHCHECK --interval=2s CMD [ -e /tmp/.lock ] || exit 1
ENV upstream_url="http://127.0.0.1:5000"
ENV mode="http"
CMD ["fwatchdog"]