mirror of
https://github.com/balena-os/balena-supervisor.git
synced 2024-12-29 18:18:52 +00:00
128 lines
3.2 KiB
Bash
Executable File
128 lines
3.2 KiB
Bash
Executable File
#!/bin/bash
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#
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# balena-supervisor automated build
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#
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# Required variables:
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# * ARCH
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#
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# Optional variables:
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# * TAG: The default will be the current branch name
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# * PUSH_IMAGES
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# * CLEANUP
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# * MIXPANEL_TOKEN: default key to inject in the supervisor image
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# * EXTRA_TAG: when PUSH_IMAGES is true, additional tag to push to the registries
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#
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# Builds the supervisor for the architecture defined by $ARCH.
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# Will produce and push an image tagged as balena/$ARCH-supervisor:$TAG
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#
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# It pulls intermediate images for caching, if available:
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# balena/$ARCH-supervisor-node:$TAG
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#
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# In all of these cases it will use "master" if $TAG is not found.
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#
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# If PUSH_IMAGES is "true", it will also push the supervisor and intermediate images (must be logged in to dockerhub)
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# to the docker registry.
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# If CLEANUP is "true", all images will be removed after pushing - including any relevant images
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# that may have been on the host from before the build, so be careful!
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#
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# Requires docker >= 17.05
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#
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set -e
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THIS_FILE=$0
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if [ -z "$ARCH" ] ; then
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awk '{if(/^#/)print;else exit}' "${THIS_FILE}" | tail -n +2 | sed 's/\#//'
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exit 1
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fi
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if [ -z "$TAG" ]; then
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TAG=$(git rev-parse --abbrev-ref HEAD)
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fi
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if ! [ -x "$(command -v npx)" ]; then
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echo 'NPM/npx is required to execute this script' >&2
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exit 1
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fi
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# This is the supervisor image we will produce
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TARGET_IMAGE=balena/$ARCH-supervisor:$TAG
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TARGET_BUILD_IMAGE=balena/$ARCH-supervisor:$TAG-build
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MASTER_IMAGE=balena/$ARCH-supervisor:master
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MASTER_BUILD_IMAGE=balena/$ARCH-supervisor:master-build
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CACHE_FROM=""
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function useCache() {
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image=$1
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# Always add the cache because we can't do it from
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# a subshell and specifying a missing image is fine
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CACHE_FROM="${CACHE_FROM} --cache-from $image"
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# Pull in parallel for speed
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docker pull "$image" &
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}
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function retryImagePush() {
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local image=$1
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local -i retries
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local success=1
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while (( retries < 3 )); do
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retries+=1
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if docker push "${image}"; then
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success=0
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break
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fi
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done
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return $success
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}
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# If we're building for an ARM architecture, we uncomment
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# the cross-build commands, to enable emulation
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function processDockerfile() {
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if [ "${ARCH}" == "aarch64" ] || [ "${ARCH}" == "armv7hf" ] || [ "${ARCH}" == "rpi" ]; then
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sed -E 's/#(.*"cross-build-(start|end)".*)/\1/g' Dockerfile
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else
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cat Dockerfile
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fi
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}
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export ARCH
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useCache "${TARGET_IMAGE}"
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useCache "${TARGET_BUILD_IMAGE}"
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useCache "${MASTER_IMAGE}"
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useCache "${MASTER_BUILD_IMAGE}"
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# Wait for our cache to be downloaded
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wait
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BUILD_ARGS="$CACHE_FROM --build-arg ARCH=${ARCH}"
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# Try to build the first stage
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processDockerfile | docker build -f - -t "${TARGET_BUILD_IMAGE}" --target BUILD ${BUILD_ARGS} .
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# Now try to build the final stage
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processDockerfile | docker build -f - -t "${TARGET_IMAGE}" ${BUILD_ARGS} .
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if [ "${PUSH_IMAGES}" == "true" ]; then
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retryImagePush "${TARGET_BUILD_IMAGE}" &
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retryImagePush "${TARGET_IMAGE}" &
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if [ -n "${EXTRA_TAG}" ]; then
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docker tag "${TARGET_IMAGE}" "balena/${ARCH}-supervisor:${EXTRA_TAG}"
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retryImagePush "balena/${ARCH}-supervisor:${EXTRA_TAG}" &
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fi
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fi
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# Wait for any ongoing deploys
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wait
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if [ "$CLEANUP" = "true" ]; then
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docker rmi \
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"${TARGET_IMAGE}" \
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"${TARGET_BUILD_IMAGE}" \
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"${MASTER_IMAGE}" \
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"${MASTER_BUILD_IMAGE}"
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fi
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