75 lines
2.5 KiB
Bash
Executable File
75 lines
2.5 KiB
Bash
Executable File
#!/bin/bash
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## This script is to automate the preparation for docker images for ACS.
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## If registry server and port provided, the images will be pushed there.
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## Usage:
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## sudo ./build_docker.sh DOCKER_BUILD_DIR [REGISTRY_SERVER REGISTRY_PORT]
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set -x -e
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## Dockerfile directory
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DOCKER_BUILD_DIR=$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=$5
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[ -d "$DOCKER_BUILD_DIR" ] || {
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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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## Docker image label, so no need to remember its hash
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docker_image_name=$DOCKER_BUILD_DIR
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remote_image_name=$REGISTRY_SERVER:$REGISTRY_PORT/$docker_image_name
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## File name for docker image
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docker_image_gz=$docker_image_name.gz
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[ -n "$docker_image_gz" ] || {
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echo "Error: Output docker image filename is empty"
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exit 1
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}
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function cleanup {
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rm -rf $DOCKER_BUILD_DIR/files
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rm -rf $DOCKER_BUILD_DIR/deps
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docker rmi $remote_image_name || true
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}
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trap cleanup exit
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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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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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cp -r files $DOCKER_BUILD_DIR/files
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docker build --no-cache -t $docker_image_name $DOCKER_BUILD_DIR
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## Flatten the image by importing an exported container on this image
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## Note: it will squash the image with only one layer and lost all metadata such as ENTRYPOINT,
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## so apply only to the base image
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## TODO: wait docker-squash supporting Docker 1.10+
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## ref: https://github.com/jwilder/docker-squash/issues/45
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if [ "$docker_image_name" = "docker-base" ]; then
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tmp_container=$(docker run -d ${docker_image_name} /bin/bash)
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docker export $tmp_container | docker import - ${docker_image_name}
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docker rm -f $tmp_container || true
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fi
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if [ -n "$REGISTRY_SERVER" ] && [ -n "$REGISTRY_PORT" ]; then
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## Add registry information as tag, so will push as latest
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## Temporarily add -f option to prevent error message of Docker engine version < 1.10.0
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docker tag -f $docker_image_name $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, use fake email address to bypass login check
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docker login -u $REGISTRY_USERNAME -p "$REGISTRY_PASSWD" -e "@" $REGISTRY_SERVER:$REGISTRY_PORT
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docker push $remote_image_name
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fi
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docker save $docker_image_name | gzip -c > $docker_image_gz
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