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coolify/scripts/clean-manifests.sh
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#!/usr/bin/env bash
set -euo pipefail
OPTION="$*"
LIMIT="${2:-}"
IMAGE=coollabsio/coolify
KEEP_TAG_PATTERN='^(latest|preview|main|nightly|v?[0-9]+\.[0-9]+\.[0-9]+(-(alpha|beta|rc)\.[0-9]+)?)$'
KEEP_TAG_EXCEPTIONS=v3,4.0.0-beta.420.1,4.0.0-beta.420.2,4.0.0-beta.420.3,4.0.0-beta.420.4,4.0.0-beta.420.5,4.0.0-beta.420.6,4.0.0-beta.420.7,4.0.0-beta.420.8,4.0.0-beta.420.9,4.0.0-beta.420.10
KEEP_NIGHTLY_DAYS=14
MIN_AGE_DAYS=1
DOCKERHUB_USERNAME="${DOCKERHUB_USERNAME:-}"
DOCKERHUB_TOKEN="${DOCKERHUB_TOKEN:-}"
GHCR_TOKEN=""
TO_DELETE_FILE=scripts/manifests-to-delete.tsv
DELETED_FILE=scripts/deleted-manifests.tsv
WORK_DIR="$(mktemp -d)"
BOLD=$'\033[1m' BLUE=$'\033[34m' GREEN=$'\033[32m' YELLOW=$'\033[33m' RED=$'\033[31m' RESET=$'\033[0m'
heading() { printf '\n %s%s%s\n' "$BOLD" "$*" "$RESET"; }
info() { printf ' %sℹ%s %s\n' "$BLUE" "$RESET" "$*"; }
ok() { printf ' %s✔%s %s\n' "$GREEN" "$RESET" "$*"; }
warn() { printf ' %s⚠%s %s\n' "$YELLOW" "$RESET" "$*"; }
die() {
printf ' %s✖%s %s\n' "$RED" "$RESET" "$*" >&2
exit 1
}
cd "$(dirname "$0")/.."
trap 'rm -rf "$WORK_DIR"' EXIT
main() {
[[ "$OPTION" =~ ^(--delete [1-9][0-9]*)?$ ]] || die "'$OPTION' is not an option, expected --delete with a count or none"
[ -n "$DOCKERHUB_USERNAME" ] && [ -n "$DOCKERHUB_TOKEN" ] || die "DOCKERHUB_USERNAME and DOCKERHUB_TOKEN must be set to read docker.io/$IMAGE"
GHCR_TOKEN="$(gh auth token)" || die "gh is not signed in with a token that has read:packages and delete:packages: gh auth refresh -s read:packages,delete:packages"
heading "Reading ghcr.io/$IMAGE and docker.io/$IMAGE"
read_ghcr_versions
read_dockerhub_manifests
read_dockerhub_images
select_kept_tags
read_manifests
select_kept_manifests
heading "Selecting what to delete"
write_list
delete_manifests
verify_kept_manifests
}
read_ghcr_versions() {
list_ghcr_versions "state=active" --paginate > "$WORK_DIR/ghcr-active.tsv"
cut -f 1 "$WORK_DIR/ghcr-active.tsv" > "$WORK_DIR/on-ghcr.txt"
ok "ghcr.io/$IMAGE has $(count < "$WORK_DIR/ghcr-active.tsv") versions, $(awk -F '\t' '$3 == ""' "$WORK_DIR/ghcr-active.tsv" | count) of them untagged"
}
# The manifests endpoint is undocumented, Docker Hub uses it for image management, so it can change without notice
read_dockerhub_manifests() {
local hub base url page key
hub="$(hub_token)" || die "could not sign in to the Docker Hub API as $DOCKERHUB_USERNAME"
base="https://hub.docker.com/v2/namespaces/${IMAGE%%/*}/repositories/${IMAGE#*/}/manifests?page_size=100"
url="$base"
while [ -n "$url" ]; do
page="$(curl -sSf --retry 3 -H "Authorization: Bearer $hub" "$url")" || die "could not list the manifests of docker.io/$IMAGE from the Docker Hub API"
jq -r '.manifests[] | [.manifest_digest, .media_type, (.tags // [] | join(",")), .last_pushed, (if (.media_type // "" | test("index|list")) then .size else .total_size end), ([.os, .arch] | map(select(. != null and . != "")) | join("/"))] | @tsv' <<< "$page" \
>> "$WORK_DIR/dockerhub-manifests.tsv"
key="$(jq -r 'select(.manifests | length > 0) | .last_evaluated_key // empty' <<< "$page")"
url="${key:+$base&last_evaluated_key=$(jq -rn --arg key "$key" '$key | @uri')}"
done
awk -F '\t' -v OFS='\t' '{ n = split($3, tags, ","); for (i = 1; i <= n; i++) print $1, $2, tags[i] }' "$WORK_DIR/dockerhub-manifests.tsv" > "$WORK_DIR/dockerhub.tsv"
grep -q $'\tlatest$' "$WORK_DIR/dockerhub.tsv" || die "docker.io/$IMAGE lists no latest tag, expected the Docker Hub API to return the tags of every manifest"
awk -F '\t' '$4 != "" { found = 1; exit } END { exit !found }' "$WORK_DIR/dockerhub-manifests.tsv" || die "docker.io/$IMAGE lists no push dates, expected them from the Docker Hub API"
ok "docker.io/$IMAGE has $(count < "$WORK_DIR/dockerhub-manifests.tsv") manifests, $(awk -F '\t' '$3 == ""' "$WORK_DIR/dockerhub-manifests.tsv" | count) of them untagged"
}
read_dockerhub_images() {
local hub url page
hub="$(hub_token)" || die "could not sign in to the Docker Hub API as $DOCKERHUB_USERNAME"
url="https://hub.docker.com/v2/namespaces/${IMAGE%%/*}/repositories/${IMAGE#*/}/tags?page_size=100"
while [ -n "$url" ]; do
if ! page="$(curl -sSf --retry 3 -H "Authorization: Bearer $hub" "$url")"; then
warn "the Docker Hub API refused a page of the tags of docker.io/$IMAGE, the images of an index that only docker.io has are deleted in a later run"
: > "$WORK_DIR/dockerhub-images.tsv"
return
fi
jq -r '.results[] | .digest as $index | .images[]? | select($index and .digest and .digest != $index) | [$index, .digest] | @tsv' <<< "$page" >> "$WORK_DIR/dockerhub-images.tsv"
url="$(jq -r '.next // empty' <<< "$page")"
done
ok "read the images of the $(cut -f 1 "$WORK_DIR/dockerhub-images.tsv" | sort -u | count) indexes of the tags of docker.io/$IMAGE from the Docker Hub API"
}
select_kept_tags() {
local cutoff
{ cut -f 3 "$WORK_DIR/ghcr-active.tsv" | tr ',' '\n' && cut -f 3 "$WORK_DIR/dockerhub.tsv"; } | sed '/^$/d' | sort -u > "$WORK_DIR/tags.txt"
git ls-remote --tags "https://github.com/$IMAGE.git" | sed -n 's|.*refs/tags/||p' | sed 's/\^{}$//; p; s/^v//' > "$WORK_DIR/keep.txt" \
|| die "could not list the git tags of github.com/$IMAGE"
gh pr list --repo "$IMAGE" --state open --limit 1000 --json number --jq '.[] | "pr-\(.number)"' >> "$WORK_DIR/keep.txt" \
|| die "gh could not list the open pull requests of $IMAGE"
tr ',' '\n' <<< "$KEEP_TAG_EXCEPTIONS" >> "$WORK_DIR/keep.txt"
cutoff="$(jq -nr --argjson days "$KEEP_NIGHTLY_DAYS" 'now - $days * 86400 | strftime("%Y%m%d")')"
{
grep -E "$KEEP_TAG_PATTERN" "$WORK_DIR/tags.txt" || true
grep -xF -f "$WORK_DIR/keep.txt" "$WORK_DIR/tags.txt" || true
grep -E -e '-(alpha|beta|rc)\.[0-9]+\.20[0-9]{6}\.[0-9]+$' "$WORK_DIR/tags.txt" | awk -F . -v cutoff="$cutoff" '$(NF - 1) >= cutoff' || true
} | sort -u > "$WORK_DIR/kept-tags.txt"
grep -qx latest "$WORK_DIR/kept-tags.txt" || die "found no latest tag, expected it among the tags to keep"
ok "keeping $(count < "$WORK_DIR/kept-tags.txt") tags: the ones KEEP_TAG_PATTERN matches or KEEP_TAG_EXCEPTIONS lists, the nightlies of the last $KEEP_NIGHTLY_DAYS days, the git tags of github.com/$IMAGE and the tags of open pull requests"
}
read_manifests() {
local digest tag hub
mkdir "$WORK_DIR/manifests"
request_manifests ghcr.io "$WORK_DIR/on-ghcr.txt" -f -o "$WORK_DIR/manifests/{}" -w '{}\t%{size_download}\n' > "$WORK_DIR/bytes.tsv" \
|| die "could not read the manifests of ghcr.io/$IMAGE"
awk -F '\t' -v OFS='\t' 'FILENAME == ARGV[1] { kept[$1]; next } FILENAME == ARGV[2] { ghcr[$1]; next } ($3 in kept) && !($1 in ghcr) && !seen[$1]++ { print $1, $2, $3 }' \
"$WORK_DIR/kept-tags.txt" "$WORK_DIR/on-ghcr.txt" "$WORK_DIR/dockerhub.tsv" > "$WORK_DIR/dockerhub-roots.tsv"
awk -F '\t' '$2 ~ /oci\.image\.index/ { print $1 }' "$WORK_DIR/dockerhub-roots.tsv" > "$WORK_DIR/dockerhub-indexes.txt"
request_manifests docker.io "$WORK_DIR/dockerhub-indexes.txt" -f -o "$WORK_DIR/manifests/{}" || die "could not read the kept manifests that only docker.io has"
hub="$(hub_token)" || die "could not sign in to the Docker Hub API as $DOCKERHUB_USERNAME"
while IFS=$'\t' read -r digest tag; do
curl -sSf --retry 3 -H "Authorization: Bearer $hub" "https://hub.docker.com/v2/namespaces/${IMAGE%%/*}/repositories/${IMAGE#*/}/tags/$tag" | jq -r --arg root "$digest" '.images[] | [$root, .digest] | @tsv' \
|| die "could not read the images of $tag from the Docker Hub API"
done < <(awk -F '\t' -v OFS='\t' '$2 !~ /oci\.image\.index/ { print $1, $3 }' "$WORK_DIR/dockerhub-roots.tsv") > "$WORK_DIR/children.tsv"
manifest_fields '.manifests[]? | [manifest, .digest, (.platform | [.os, .architecture, .variant] | map(values) | join("/")), .annotations["vnd.docker.reference.digest"]]' \
>> "$WORK_DIR/children.tsv"
manifest_fields '(.config // empty), .layers[]? | [manifest, .digest, .size]' > "$WORK_DIR/blobs.tsv"
manifest_fields '[manifest, if .manifests then "index" elif any(.layers[]?; .mediaType == "application/vnd.in-toto+json") then "attestation" else "image" end]' \
> "$WORK_DIR/kinds.tsv"
ok "read the $(count < "$WORK_DIR/bytes.tsv") manifests on ghcr.io and $(count < "$WORK_DIR/dockerhub-roots.tsv") kept manifests that only docker.io has, $(count < "$WORK_DIR/dockerhub-indexes.txt") of them with a GET that counts as a pull"
}
select_kept_manifests() {
local kinds
kept_manifests "$WORK_DIR/ghcr-active.tsv" > "$WORK_DIR/kept-ghcr.io.txt"
kept_manifests "$WORK_DIR/dockerhub.tsv" > "$WORK_DIR/kept-docker.io.txt"
sort -u "$WORK_DIR/kept-ghcr.io.txt" "$WORK_DIR/kept-docker.io.txt" > "$WORK_DIR/kept.txt"
awk 'FILENAME == ARGV[1] { ghcr[$1]; next } !($1 in ghcr) { exit 1 }' "$WORK_DIR/on-ghcr.txt" "$WORK_DIR/kept-ghcr.io.txt" \
|| die "ghcr.io lists no version for some kept manifests, expected one for each"
kinds="$(awk -F '\t' 'function amount(count, one, many) { return (count + 0) " " (count == 1 ? one : many) }
FILENAME == ARGV[1] { kept[$1]; next } ($1 in kept) { count[$2]++ }
END { print amount(count["index"], "index", "indexes") ", " amount(count["image"], "image", "images") ", " amount(count["attestation"], "attestation", "attestations") }' "$WORK_DIR/kept-ghcr.io.txt" "$WORK_DIR/kinds.tsv")"
ok "keeping $(count < "$WORK_DIR/kept-ghcr.io.txt") manifests on ghcr.io ($kinds) and $(count < "$WORK_DIR/kept-docker.io.txt") on docker.io"
}
write_list() {
local cutoff
cutoff="$(jq -nr --argjson days "$MIN_AGE_DAYS" 'now - $days * 86400 | strftime("%Y-%m-%dT%H:%M:%SZ")')"
ok "keeping the $(awk -F '\t' -v cutoff="$cutoff" '$4 >= cutoff && !seen[$1]++' "$WORK_DIR/ghcr-active.tsv" | count) versions on ghcr.io and the $(awk -F '\t' -v cutoff="$cutoff" '$4 >= cutoff' "$WORK_DIR/dockerhub-manifests.tsv" | count) manifests on docker.io pushed since $cutoff, a running build may still need them"
awk -F '\t' -v OFS='\t' -v cutoff="$cutoff" 'function platform_of(digest) { return (reference[digest] in platform) ? platform[reference[digest]] : platform[digest] }
FILENAME == ARGV[1] { kept[$1]; next }
FILENAME == ARGV[2] { kind[$1] = $2; next }
FILENAME == ARGV[3] { size[$1] = $2; next }
FILENAME == ARGV[4] { size[$1] += $3; next }
FILENAME == ARGV[5] { platform[$2] = $3; reference[$2] = $4; next }
FILENAME == ARGV[6] {
on_docker_hub[$1]
if (!($1 in kept) && !($1 in kind) && $4 < cutoff && !seen[$1]++)
print "no", "yes", ($2 ~ /index|list/ ? "index" : ($6 == "unknown/unknown" ? "attestation" : "image")), ($6 == "unknown/unknown" ? "" : $6), $3, $4, $5, "", $1
next
}
!($1 in kept) && $4 < cutoff && !seen[$1]++ { print "yes", (($1 in on_docker_hub) ? "yes" : "no"), kind[$1], platform_of($1), $3, $4, size[$1], $2, $1 }' \
"$WORK_DIR/kept.txt" "$WORK_DIR/kinds.tsv" "$WORK_DIR/bytes.tsv" "$WORK_DIR/blobs.tsv" "$WORK_DIR/children.tsv" "$WORK_DIR/dockerhub-manifests.tsv" "$WORK_DIR/ghcr-active.tsv" \
| sort -t $'\t' -k3,3r -k6,6 > "$WORK_DIR/sorted.tsv"
: > "$WORK_DIR/grouped.txt"
awk -F '\t' -v grouped="$WORK_DIR/grouped.txt" 'function emit(digest, list, n, i) { printed[digest]; print line[digest]; n = split(children[digest], list, " "); for (i = 1; i <= n; i++) if ((list[i] in line) && !(list[i] in printed) && --parents[list[i]] == 0) { print list[i] > grouped; emit(list[i]) } }
FILENAME == ARGV[1] || FILENAME == ARGV[2] { if (!(($1, $2) in pair)) { pair[$1, $2]; children[$1] = children[$1] " " $2 } next }
{ order[++rows] = $9; line[$9] = $0; type[$9] = $3 }
END {
for (i = 1; i <= rows; i++) if (order[i] in children) { n = split(children[order[i]], list, " "); for (j = 1; j <= n; j++) if (list[j] in line) parents[list[j]]++ }
for (i = 1; i <= rows; i++) if (type[order[i]] == "index" && !(order[i] in children)) emit(order[i])
for (i = 1; i <= rows; i++) if (type[order[i]] == "image" && !(order[i] in parents) && !(order[i] in printed)) emit(order[i])
for (i = 1; i <= rows; i++) if (!(order[i] in printed)) emit(order[i])
}' "$WORK_DIR/children.tsv" "$WORK_DIR/dockerhub-images.tsv" "$WORK_DIR/sorted.tsv" > "$WORK_DIR/rows.tsv"
write_table "$WORK_DIR/rows.tsv" "$TO_DELETE_FILE"
ok "$(awk -F '\t' 'END { print ($9 + 0 ? $9 " to delete (" $3 "), they free " $7 : "nothing to delete") }' "$TO_DELETE_FILE")"
info "$TO_DELETE_FILE lists every manifest to delete in the order it deletes them, with its type, platform, tags, date and size"
}
delete_manifests() {
local on_ghcr on_docker_hub type tags version digest rest name deleted ghcr docker_hub status
if [ -z "$LIMIT" ]; then
info "a dry run deletes nothing, --delete with a count deletes that many from the top of the list"
return
fi
heading "Deleting"
write_table /dev/null "$DELETED_FILE"
while IFS='|' read -r on_ghcr on_docker_hub type tags version digest rest; do
[[ "$digest" =~ ^sha256:[0-9a-f]{64}$ ]] || die "the list names '$digest', expected a sha256 digest"
name="$digest${tags:+ ($tags)}"
deleted="" ghcr=no docker_hub=no status=""
if [ "$on_ghcr" = yes ]; then
delete_ghcr_version "$version" "$type $name" || continue
deleted=ghcr.io ghcr=yes
fi
if [ "$on_docker_hub" = yes ]; then
status="$(delete_dockerhub_manifest "$digest")"
if [[ "$status" == 2?? ]]; then
deleted="${deleted:+$deleted and }docker.io" docker_hub=yes
fi
fi
if [ -n "$deleted" ]; then
ok "deleted the $type $BOLD$name$RESET from $deleted"
printf '%s\t%s\t%s\n' "$ghcr" "$docker_hub" "$rest" >> "$WORK_DIR/deleted.tsv"
write_table "$WORK_DIR/deleted.tsv" "$DELETED_FILE"
fi
case "$status" in
"" | 2?? | 404) ;;
403 | 5??) warn "docker.io keeps the $type $name for now, it answered $status, the next run tries again" ;;
*) die "could not delete the $type $name from docker.io, it answered $status" ;;
esac
done < <(awk -F '\t' -v limit="$LIMIT" 'FILENAME == ARGV[1] { grouped[$1]; next } FNR > limit && !($9 in grouped) { exit } { print }' "$WORK_DIR/grouped.txt" "$WORK_DIR/rows.tsv" | awk -F '\t' -v OFS='|' '{ rest = $3; for (i = 4; i <= NF; i++) rest = rest "\t" $i; print $1, $2, $3, $5, $8, $9, rest }')
ok "$(awk -F '\t' 'END { print ($9 + 0 ? "deleted " $9 " (" $3 "), they free " $7 : "deleted nothing") }' "$DELETED_FILE")"
info "$DELETED_FILE lists what this run deleted and where, ghcr.io can restore them for 30 days, docker.io deletes them permanently"
}
verify_kept_manifests() {
local registry missing
[ -n "$LIMIT" ] || return 0
for registry in ghcr.io docker.io; do
missing="$(request_manifests "$registry" "$WORK_DIR/kept-$registry.txt" --head -o /dev/null -w '%{http_code}\t{}\n' | awk '$1 != 200 { print $2 }')" \
|| die "could not check the kept manifests on $registry"
[ -z "$missing" ] || die "$(count <<< "$missing") kept manifests are gone from $registry: $(head -n 3 <<< "$missing" | paste -sd ' ' -)"
done
ok "every kept manifest is still on ghcr.io and docker.io"
}
list_ghcr_versions() {
local query="$1"
shift
gh api "$@" "/orgs/${IMAGE%%/*}/packages/container/${IMAGE#*/}/versions?per_page=100&$query" \
--jq '.[] | [.name, (.id | tostring), (.metadata.container.tags | join(",")), .created_at] | @tsv' 2> /dev/null \
|| die "gh could not list the versions of ghcr.io/$IMAGE, its token needs read:packages and delete:packages: gh auth refresh -s read:packages,delete:packages"
}
request_manifests() {
local registry="$1" list="$2" chunk token
shift 2
[ -s "$list" ] || return 0
split -l 1000 "$list" "$WORK_DIR/chunk-"
for chunk in "$WORK_DIR"/chunk-*; do
token="$(registry_token "$registry" pull)"
xargs -P 16 -I {} curl -sS --retry 3 -H "Authorization: Bearer $token" \
-H 'Accept: application/vnd.oci.image.index.v1+json, application/vnd.docker.distribution.manifest.list.v2+json, application/vnd.oci.image.manifest.v1+json, application/vnd.docker.distribution.manifest.v2+json' \
"$@" "https://${registry/docker.io/registry-1.docker.io}/v2/$IMAGE/manifests/{}" < "$chunk" || return 1
rm "$chunk"
done
}
manifest_fields() {
find "$WORK_DIR/manifests" -type f -exec jq -r 'def manifest: input_filename | sub(".*/"; ""); '"$1"' | @tsv' {} +
}
kept_manifests() {
awk -F '\t' 'function keep(digest, list, n, i) { if (digest in kept) return; kept[digest]; print digest; n = split(children[digest], list, " "); for (i = 1; i <= n; i++) keep(list[i]) }
FILENAME == ARGV[1] { children[$1] = children[$1] " " $2; next }
FILENAME == ARGV[2] { tag[$1]; next }
{ n = split($3, tags, ","); for (i = 1; i <= n; i++) if (tags[i] in tag) keep($1) }' "$WORK_DIR/children.tsv" "$WORK_DIR/kept-tags.txt" "$1"
}
write_table() {
awk -F '\t' -v OFS='\t' 'function human(bytes, unit) { for (unit = 1; bytes >= 1000 && unit < 5; unit++) bytes /= 1000; return sprintf(unit == 1 ? "%d %s" : "%.1f %s", bytes, units[unit]) }
function amount(count, one, many) { return (count + 0) " " (count == 1 ? one : many) }
BEGIN { split("B kB MB GB TB", units, " "); print "ghcr", "docker_hub", "type", "platform", "tags", "created", "size", "ghcr_id", "digest" }
FILENAME == ARGV[1] { removed[$9]; types[$3]++; manifests++; if ($7 != "") $7 = human($7); print; next }
FILENAME == ARGV[2] { bytes[$1] = $2; before += $2; if (!($1 in removed)) after += $2; next }
FILENAME == ARGV[3] { if ($1 in bytes) on_hub[$1]; size = ($1 in bytes) ? bytes[$1] : $5; hub_before += size; if (!($1 in removed)) hub_after += size; next }
{ blob[$2] = $3; if (!($1 in removed)) used[$2]; if ($1 in on_hub) { hub_blob[$2] = $3; if (!($1 in removed)) hub_used[$2] } }
END {
for (digest in blob) { before += blob[digest]; if (digest in used) after += blob[digest] }
for (digest in hub_blob) { hub_before += hub_blob[digest]; if (digest in hub_used) hub_after += hub_blob[digest] }
print "total", "", amount(types["index"], "index", "indexes") ", " amount(types["image"], "image", "images") ", " amount(types["attestation"], "attestation", "attestations"),
"", "", "", human(before - after) " on ghcr.io (" human(before) " → " human(after) ") and ~" human(hub_before - hub_after) " on docker.io (~" human(hub_before) " → ~" human(hub_after) ")",
"", amount(manifests, "manifest", "manifests")
}' "$1" "$WORK_DIR/bytes.tsv" "$WORK_DIR/dockerhub-manifests.tsv" "$WORK_DIR/blobs.tsv" > "$2"
}
delete_ghcr_version() {
local error
[[ "$1" =~ ^[0-9]+$ ]] || die "the version id of the $2 is '$1', expected a number from the GitHub API"
until error="$(gh api -X DELETE "/orgs/${IMAGE%%/*}/packages/container/${IMAGE#*/}/versions/$1" 2>&1 > /dev/null)"; do
case "$error" in
*"rate limit"*) sleep 60 ;;
*downloads*)
warn "ghcr.io and docker.io keep the $2, ghcr.io deletes no version with more than 5,000 downloads"
return 1
;;
*) die "could not delete the $2 from ghcr.io: $error" ;;
esac
done
sleep 1
}
delete_dockerhub_manifest() {
local status
while status="$(curl -sS --retry 3 -o /dev/null -w '%{http_code}' -X DELETE -H "Authorization: Bearer $(registry_token docker.io pull,push,delete)" \
"https://registry-1.docker.io/v2/$IMAGE/manifests/$1")" && [ "$status" = 429 ]; do
sleep 60
done
echo "$status"
}
registry_token() {
case "$1" in
ghcr.io) basic_auth "x:$GHCR_TOKEN" | curl -sSf --retry 3 -K - "https://ghcr.io/token?scope=repository:$IMAGE:$2" ;;
docker.io) basic_auth "$DOCKERHUB_USERNAME:$DOCKERHUB_TOKEN" | curl -sSf --retry 3 -K - "https://auth.docker.io/token?service=registry.docker.io&scope=repository:$IMAGE:$2" ;;
esac | jq -r .token
}
basic_auth() {
printf 'header = "Authorization: Basic %s"\n' "$(printf '%s' "$1" | jq -Rrj @base64)"
}
hub_token() {
jq -n --arg identifier "$DOCKERHUB_USERNAME" --arg secret "$DOCKERHUB_TOKEN" '{identifier: $identifier, secret: $secret}' \
| curl -sSf --retry 3 -X POST -H 'Content-Type: application/json' --data-binary @- https://hub.docker.com/v2/auth/token | jq -er .access_token
}
count() { awk 'END { print NR }'; }
main