43 lines
1.2 KiB
Bash
Executable File
43 lines
1.2 KiB
Bash
Executable File
#!/bin/bash
|
|
set -eo pipefail
|
|
|
|
repo="$1"
|
|
if [ -z "$repo" ]; then
|
|
echo >&2 "usage: $0 repo"
|
|
echo >&2 " ie: $0 hylang"
|
|
exit 1
|
|
fi
|
|
|
|
dir="$(dirname "$(readlink -f "$BASH_SOURCE")")"
|
|
url='https://raw.githubusercontent.com/docker-library/official-images/master/library/'"$repo"
|
|
|
|
IFS=$'\n'
|
|
tags=( $(curl -fsSL "$url" | grep -vE '^$|^#' | cut -d':' -f1 | sort -u) )
|
|
unset IFS
|
|
|
|
text=
|
|
for tag in "${tags[@]}"; do
|
|
if [ -f "$dir/variant-${tag}.md" ]; then
|
|
text+=$'\n' # give a little space
|
|
# because parameter expansion eats the trailing newline
|
|
text+="$(<"$dir/variant-${tag}.md")"$'\n'
|
|
fi
|
|
done
|
|
if [ "$text" ]; then
|
|
latest=($(curl -fsSL "$url" | grep "latest.*github.com" | sed -e 's!git://github.com/!!' -e 's/@/ /' -))
|
|
if [ -z "latest" ]; then
|
|
exit 0 # If not github or no latest tag, we are done here
|
|
fi
|
|
dockerfile='https://raw.githubusercontent.com/'"${latest[1]}"'/'"${latest[2]}"'/'"${latest[3]}"'/Dockerfile'
|
|
baseImage=$(curl -fsSL "$dockerfile" | awk -F '[:[:space:]]+' '$1 == "FROM" { print $2 }')
|
|
# give a little space
|
|
echo
|
|
echo
|
|
if [ "$baseImage" = "buildpack-deps" ]; then
|
|
cat "$dir/variant-buildpacks.md"
|
|
else
|
|
cat "$dir/variant.md"
|
|
fi
|
|
echo "$text"
|
|
fi
|