docker-postfix/build.sh

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#!/usr/bin/env bash
set -e
# Do a multistage build
export DOCKER_BUILDKIT=1
export DOCKER_CLI_EXPERIMENTAL=enabled
export BUILDKIT_PROGRESS=plain
declare cache_dir
declare arg_list
if [[ "$CI" == "true" ]]; then
if [[ -f "/tmp/.buildx-cache/alpine/index.json" ]]; then
arg_list="$arg_list --cache-from type=local,src=/tmp/.buildx-cache/alpine/index.json"
fi
fi
cache_from="$( cd -- "$(dirname "$0")" >/dev/null 2>&1 ; pwd -P )/cache"
cache_to="${cache_from}"
if ! docker buildx inspect multiarch > /dev/null; then
docker buildx create --name multiarch
fi
docker buildx use multiarch
if [[ "$*" == *--push* ]]; then
if [[ -n "$DOCKER_USERNAME" ]] && [[ -n "$DOCKER_PASSWORD" ]]; then
echo "Logging into docker registry $DOCKER_REGISTRY_URL...."
echo "$DOCKER_PASSWORD" | docker login --username $DOCKER_USERNAME --password-stdin $DOCKER_REGISTRY_URL
fi
fi
arg_list=" --cache-to type=local,dest=${cache_to}"
if [[ -f "${cache_from}/index.json" ]]; then
arg_list="$arg_list --cache-from type=local,src=${cache_from}"
else
mkdir -p "${cache_from}"
fi
#if [[ -z "$PLATFORMS" ]]; then
# arg_list="$arg_list --platform linux/amd64,linux/arm64,linux/arm/v7"
#fi
docker buildx build ${arg_list} . $*