81 lines
1.9 KiB
Bash
Executable File
81 lines
1.9 KiB
Bash
Executable File
#!/bin/bash
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set -eo pipefail
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repo="$1"
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if [ -z "$repo" ]; then
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echo >&2 "usage: $0 repo"
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echo >&2 " ie: $0 hylang"
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exit 1
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fi
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dir="$(dirname "$(readlink -f "$BASH_SOURCE")")"
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repoDir="$dir/../$repo"
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# if we haven't set BASHBREW_LIBRARY explicitly (like Jenkins does, for example), don't trust the local library
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if [ -z "${BASHBREW_LIBRARY:-}" ]; then
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repo="https://github.com/docker-library/official-images/raw/master/library/$repo"
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fi
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IFS=$'\n'
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tags=( $(bashbrew cat -f '
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{{- $archSpecific := getenv "ARCH_SPECIFIC_DOCS" -}}
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{{- range .Entries -}}
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{{- $arch := $archSpecific | ternary arch (.HasArchitecture arch | ternary arch (.Architectures | first)) -}}
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{{- if .HasArchitecture $arch -}}
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{{- join "\n" .Tags -}}
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{{- "\n" -}}
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{{- end -}}
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{{- end -}}
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' "$repo") )
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unset IFS
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text=
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declare -A includedFiles=()
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for tag in "${tags[@]}"; do
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for f in \
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"$repoDir/variant-$tag.md" "$repoDir/variant-${tag##*-}.md" \
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"$dir/variant-$tag.md" "$dir/variant-${tag##*-}.md" \
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; do
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if [ -n "${includedFiles[$f]}" ]; then
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# make sure we don't duplicate variant sections
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break
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fi
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if [ -f "$f" ]; then
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includedFiles[$f]=1
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if [ -s "$f" ]; then
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# an empty file can be used to disable a specific "variant" section for an image
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text+=$'\n' # give a little space
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text+="$(< "$f")"
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text+=$'\n' # parameter expansion eats the trailing newline
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fi
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break
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fi
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done
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done
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if [ "$text" ]; then
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buildpacks=
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potentialTags="$(bashbrew list --uniq "$repo" | cut -d: -f2)"
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for tag in $potentialTags; do
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baseImage="$(bashbrew cat -f '{{ .ArchDockerFrom (.TagEntry.Architectures | first) .TagEntry }}' "$repo:$tag")"
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case "$baseImage" in
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buildpack-deps:*-*) ;; # "scm", "curl" -- not large images
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buildpack-deps:*) buildpacks=1; break ;;
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esac
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done
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echo
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echo
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if [ -n "$buildpacks" ]; then
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f='variant-buildpacks.md'
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else
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f='variant.md'
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fi
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[ -f "$repoDir/$f" ] && cat "$repoDir/$f" || cat "$dir/$f"
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echo "$text"
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fi
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