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Compare missing commands on new container image
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#!/bin/bash | |
set -eo pipefail | |
BEFORE=$(mktemp) | |
AFTER=$(mktemp) | |
cleanup() { | |
rm -f "${BEFORE}" "${AFTER}" | |
} | |
trap cleanup EXIT | |
function compare(){ | |
IMG=$1 | |
BEFORE_TAG=$2 | |
AFTER_TAG=$3 | |
DIRS="${DIRS:-/usr/local/sbin /usr/local/bin /usr/sbin /usr/bin /sbin /bin}" | |
echo "" > "${BEFORE}" | |
echo "" > "${AFTER}" | |
for dir in $DIRS; do | |
docker run --rm --entrypoint ls "${IMG}:${BEFORE_TAG}" "${dir}" >> "${BEFORE}" | |
docker run --rm --entrypoint ls "${IMG}:${AFTER_TAG}" "${dir}" >> "${AFTER}" | |
done | |
echo "Missing files on new ${IMG}:${AFTER_TAG}:" | |
diff -y "${BEFORE}" "${AFTER}" | grep "<" | awk '{ print $1 }' | sort -u | |
} | |
if [ $# -lt 3 ]; then | |
echo "usage: $0 <IMAGE> <TAG1> <TAG2>" >&2 | |
exit 1 | |
fi | |
compare $1 $2 $3 |
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