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#!/bin/bash
set -eu
if [ "${1+set}" = "set" ]; then
true
else
echo "Syntax: $0 <dockerfile>" 1>&2
exit 1
fi
DOCKERFILE=$1
EXPECTED_MD5=$(tail -n1 "$DOCKERFILE" | awk '{ print $3; }')
ACTUAL_MD5=$(head -n -1 "$DOCKERFILE" | md5sum |awk '{ print $1; }')
if [ "$EXPECTED_MD5" = "$ACTUAL_MD5" ]; then
true
else
echo "ERROR: $DOCKERFILE has been modified since it was auto-generated."
echo "Note: Current dir is $(pwd)"
exit 1
fi
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