base/update-upstream.sh at alpinevpn · hotio/base · GitHub

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#!/bin/bash
set -exuo pipefail

json=$(cat meta.json)
upstream_image=$(jq -re '.upstream_image' <<< "${json}")
upstream_tag=$(jq -re '.upstream_tag' <<< "${json}")
manifest=$(skopeo inspect --raw "docker://${upstream_image}:${upstream_tag}")
upstream_digest_amd64=$(jq -re '.manifests[] | select (.platform.architecture == "amd64" and .platform.os == "linux").digest' <<< "${manifest}")
upstream_digest_arm64=$(jq -re '.manifests[] | select (.platform.architecture == "arm64" and .platform.os == "linux").digest' <<< "${manifest}")
jq --sort-keys \
    --arg upstream_digest_amd64 "${upstream_digest_amd64}" \
    --arg upstream_digest_arm64 "${upstream_digest_arm64}" \
    '.upstream_digest_amd64 = $upstream_digest_amd64 | .upstream_digest_arm64 = $upstream_digest_arm64' <<< "${json}" | tee meta.json