129 lines
4.1 KiB
Bash
Executable File
129 lines
4.1 KiB
Bash
Executable File
#!/bin/bash
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## This script is to automate the preparation for docker images for SONiC.
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## If registry server and port provided, the images will be pushed there.
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set -e
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. ./functions.sh
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usage() {
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cat >&2 <<EOF
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Usage:
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sudo ./build_docker.sh -i=DOCKER_IMAGE_NAME DOCKER_BUILD_DIR [REGISTRY_SERVER REGISTRY_PORT]
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Description:
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-i DOCKER_IMAGE_NAME
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Specifi the docker images name, by default it is DOCKER_BUILD_DIR
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DOCKER_BUILD_DIR
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The directory containing Dockerfile
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REGISTRY_SERVER
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The server name of the docker registry
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REGISTRY_PORT
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The port of the docker registry
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Example:
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./build_docker.sh -i docker-orchagent-mlnx docker-orchagent
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EOF
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}
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docker_image_name=''
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while getopts ":i:" opt; do
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case $opt in
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i)
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docker_image_name=$OPTARG
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;;
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\?)
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echo "Invalid option: -$OPTARG" >&2
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usage
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exit 1
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;;
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esac
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done
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shift "$((OPTIND - 1))"
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## Dockerfile directory
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DOCKER_BUILD_DIR=dockers/$1
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REGISTRY_SERVER=$2
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REGISTRY_PORT=$3
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REGISTRY_USERNAME=$4
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REGISTRY_PASSWD=$5
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[ -f "$DOCKER_BUILD_DIR"/Dockerfile ] || {
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echo "Invalid DOCKER_BUILD_DIR directory" >&2
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exit 1
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}
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[ -n "$docker_image_name" ] || {
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docker_image_name=$(basename $DOCKER_BUILD_DIR)
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}
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[ ${BUILD_NUMBER} ] || {
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echo "No BUILD_NUMBER found, setting to 0."
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BUILD_NUMBER="0"
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}
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remote_image_name=$REGISTRY_SERVER:$REGISTRY_PORT/$docker_image_name:latest
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timestamp="$(date -u +%Y%m%d)"
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build_version="${timestamp}.${BUILD_NUMBER}"
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build_remote_image_name=$REGISTRY_SERVER:$REGISTRY_PORT/$docker_image_name:$build_version
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## Copy dependencies
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## Note: Dockerfile ADD doesn't support reference files outside the folder, so copy it locally
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if ls deps/* 1>/dev/null 2>&1; then
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trap_push "rm -rf $DOCKER_BUILD_DIR/deps"
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mkdir -p $DOCKER_BUILD_DIR/deps
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cp -r deps/* $DOCKER_BUILD_DIR/deps
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fi
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## Copy the suggested Debian sources
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## ref: https://wiki.debian.org/SourcesList
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trap_push "rm -rf $DOCKER_BUILD_DIR/deps"
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cp -r files $DOCKER_BUILD_DIR/files
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docker_try_rmi $docker_image_name
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## Build the docker image
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docker build --no-cache -t $docker_image_name $DOCKER_BUILD_DIR
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## Get the ID of the built image
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## Note: inspect output has quotation characters, so sed to remove it as an argument
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image_id=$(docker inspect --format="{{json .Id}}" $docker_image_name | sed -e 's/^"//' -e 's/"$//')
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## Flatten the image by importing an exported container on this image
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## Note: it will squash the image with only one layer and lost all metadata such as ENTRYPOINT,
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## so apply only to the base image
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## TODO: wait docker-squash supporting Docker 1.10+
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## ref: https://github.com/jwilder/docker-squash/issues/45
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if [ "$docker_image_name" = "docker-base" ]; then
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## Run old image in a container
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tmp_container=$(docker run -d ${docker_image_name} /bin/bash)
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## Export the container's filesystem, then import as a new image
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docker export $tmp_container | docker import - ${docker_image_name}
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## Remove the container
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docker rm -f $tmp_container || true
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## Remove the old image
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docker rmi -f $image_id || true
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fi
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image_sha=''
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if [ -n "$REGISTRY_SERVER" ] && [ -n "$REGISTRY_PORT" ]; then
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## Add registry information as tag, so will push as latest
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## Add additional tag with build information
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## Temporarily add -f option to prevent error message of Docker engine version < 1.10.0
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docker tag $docker_image_name $remote_image_name
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docker tag $docker_image_name $build_remote_image_name
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## Login the docker image registry server
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## Note: user name and password are passed from command line
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docker login -u $REGISTRY_USERNAME -p "$REGISTRY_PASSWD" $REGISTRY_SERVER:$REGISTRY_PORT
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## Push image to registry server
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## And get the image digest SHA256
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trap_push "docker rmi $remote_image_name || true"
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trap_push "docker rmi $build_remote_image_name || true"
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image_sha=$(docker push $remote_image_name | sed -n "s/.*: digest: sha256:\([0-9a-f]*\).*/\\1/p")
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docker push $build_remote_image_name
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fi
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mkdir -p target
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rm -f target/$docker_image_name.*.gz
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docker save $docker_image_name | gzip -c > target/$docker_image_name.$image_sha.gz
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