termux-packages/scripts/update-docker.sh

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#!/bin/sh
set -e -u
CONTAINER=termux-package-builder
IMAGE=termux/package-builder
docker pull $IMAGE
LATEST=`docker inspect --format "{{.Id}}" $IMAGE`
RUNNING=`docker inspect --format "{{.Image}}" $CONTAINER`
if [ $LATEST = $RUNNING ]; then
echo "Image '$IMAGE' used in the container '$CONTAINER' is already up to date"
else
echo "Image '$IMAGE' used in the container '$CONTAINER' has been updated - removing the outdated container"
docker stop $CONTAINER
docker rm -f $CONTAINER
fi