47 lines
983 B
Bash
Executable File
47 lines
983 B
Bash
Executable File
#!/bin/bash
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set -eu
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image="${1:-hello-world}"
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self="$(basename "$BASH_SOURCE")"
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cd "$(dirname "$(readlink -f "$BASH_SOURCE")")"
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# get the most recent commit which modified any of "$@"
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fileCommit() {
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git log -1 --format='format:%H' HEAD -- "$@"
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}
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# get the most recent commit which modified "$1/Dockerfile" or any file COPY'd from "$1/Dockerfile"
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dirCommit() {
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local dir="$1"; shift
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(
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cd "$dir"
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fileCommit \
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Dockerfile \
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$(git show HEAD:./Dockerfile | awk '
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toupper($1) == "COPY" {
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for (i = 2; i < NF; i++) {
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print $i
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}
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}
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')
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)
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}
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cat <<-EOH
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# this file is generated via https://github.com/docker-library/hello-world/blob/$(fileCommit "$self")/$self
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Maintainers: Tianon Gravi <admwiggin@gmail.com> (@tianon),
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Joseph Ferguson <yosifkit@gmail.com> (@yosifkit)
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GitRepo: https://github.com/docker-library/hello-world.git
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Directory: $image
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EOH
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commit="$(dirCommit "$image")"
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echo
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cat <<-EOE
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Tags: latest
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GitCommit: $commit
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EOE
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