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alpine crond requires root; supercronic works as any user. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
17 lines
654 B
Docker
17 lines
654 B
Docker
FROM alpine:3.19
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# zstd for compression, tzdata so cron fires at correct local time
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RUN apk add --no-cache zstd tzdata curl
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COPY compress.sh /usr/local/bin/compress.sh
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RUN chmod +x /usr/local/bin/compress.sh
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# supercronic runs as any user (unlike alpine crond which requires root)
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RUN ARCH=$(uname -m | sed 's/x86_64/amd64/;s/aarch64/arm64/') && \
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curl -fsSL "https://github.com/aptible/supercronic/releases/latest/download/supercronic-linux-${ARCH}" \
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-o /usr/local/bin/supercronic && chmod +x /usr/local/bin/supercronic
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RUN echo "0 2 * * * /usr/local/bin/compress.sh > /proc/1/fd/1 2>&1" > /etc/crontab
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CMD ["supercronic", "/etc/crontab"]
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