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59 lines
1.5 KiB
59 lines
1.5 KiB
#!/bin/sh
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#
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# push repositories to DockerHub
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#
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# Requires curl and docker
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#
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set -e
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HUB_USER=$(docker info 2>/dev/null | sed -n 's/^[[:space:]]*Username:[[:space:]]*//p')
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if [ -z "$HUB_USER" ]; then
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echo 'Use "docker login" to login into DockerHub.' >&2
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exit 1
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fi
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hub_update() {
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local_repo=$1
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hub_repo=$HUB_USER/${local_repo##*/}
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# get local digest
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local_digest=$(docker inspect "$local_repo" --format '{{.Id}}' 2>/dev/null)
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[ -z "$local_digest" ] && return
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# get remote digest
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token=$(curl --silent "https://auth.docker.io/token?scope=repository:${hub_repo}:pull&service=registry.docker.io" | \
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tr '\r\n' ' ' | \
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sed -n 's/^.*"token": *"\([^"]*\)".*/\1/p')
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hub_digest=$(curl --silent \
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--header 'Accept: application/vnd.docker.distribution.manifest.v2+json' \
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--header "Authorization: Bearer $token" \
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"https://registry-1.docker.io/v2/${hub_repo}/manifests/latest" | \
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tr '\r\n' ' ' | \
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sed -n 's/^.*"config": *{[^}]*"digest": *"\([^"]*\)".*/\1/p')
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# push repository, if digest differs
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if [ "$local_digest" \!= "$hub_digest" ]; then
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echo
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echo "*** $hub_repo"
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echo
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[ "$local_repo" = "$hub_repo" ] || \
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docker tag "$local_repo" "$hub_repo"
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docker push "$hub_repo"
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[ "$local_repo" = "$hub_repo" ] || \
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docker rmi "$hub_repo" > /dev/null
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fi
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}
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if [ $# -gt 0 ]; then
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# push repos given on command line
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for repo in "$@"; do
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hub_update "$repo"
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done
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else
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# push (almost) all repos
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images=$(sed -e '/^[[:space:]]*$/d' -e '/^[[:space:]]*#/d' hub_images)
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for repo in $images; do
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hub_update "$repo"
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done
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fi
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