0k-charms/cron/build/Dockerfile

FROM alpine:3.18 AS build

ENV DOCKER_VERSION=25.0.2

RUN apk add --no-cache curl

#RUN curl -L https://download.docker.com/linux/static/stable/x86_64/docker-"$DOCKER_VERSION".tgz | \
RUN curl -L https://docker.0k.io/downloads/docker-"$DOCKER_VERSION".tgz | \
    tar -xz -C /tmp/ \
    && mv /tmp/docker/docker /usr/bin/docker
RUN curl -L https://docker.0k.io/downloads/lock-40a4b8f > /usr/bin/lock \
    && chmod +x /usr/bin/lock

FROM alpine:3.18

## Used by `lock`
RUN apk add --no-cache bash 

## /usr/bin/dc is a calculator provided by busybox that conflicts with
## the `dc` command provided by `compose`. We have no need of busybox
## calculator
RUN rm /usr/bin/dc

COPY --from=build /usr/bin/docker /usr/bin/docker
COPY --from=build /usr/bin/lock /usr/bin/lock

ENTRYPOINT [ "crond", "-f", "-l", "0" ]