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Build system for hub.docker.com

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Christian Mäder 2019-02-01 09:58:07 +01:00
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66
DOCKER_HUB.md Normal file
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# cloud.docker.com Configuration
The automatic build is configured in cloud.docker.com.
The following build configuration is expected:
```yaml
Source Repository: github.com/netbox-community/netbox-docker
Build Location: Build on Docker Hub's infrastructure
Autotest: Internal and External Pull Requests
Repository Links: Enable for Base Image
Build Rules:
- Source Type: Branch
Source: master
Docker Tag: branches-main
Dockerfile location: Dockerfile
- Source Type: Branch
Source: master
Docker Tag: branches-ldap
Dockerfile location: Dockerfile.ldap
- Source Type: Branch
Source: master
Docker Tag: prerelease-main
Dockerfile location: Dockerfile
- Source Type: Branch
Source: master
Docker Tag: prerelease-ldap
Dockerfile location: Dockerfile.ldap
- Source Type: Branch
Source: master
Docker Tag: release-main
Dockerfile location: Dockerfile
- Source Type: Branch
Source: master
Docker Tag: release-ldap
Dockerfile location: Dockerfile.ldap
Build Environment Variables:
# Create an app on Github and use it's OATH credentials here
- Key: GITHUB_OAUTH_CLIENT_ID
Value: <secret>
- Key: GITHUB_OAUTH_CLIENT_SECRET
Value: <secret>
Build Triggers:
- Name: Cron Trigger
# Use this trigger in combination with e.g. https://cron-job.org in order to regularly schedule builds
```
## Background Knowledge
The build system of cloud.docker.com is not made for this kind of project.
But we found a way to make it work, and this is how:
1. The docker hub build system [allows to overwrite the scripts that get executed
for `build`, `test` and `push`](overwrite). See `hooks/*`.
2. Shared functionality of the scripts `build`, `test` and `push` is extracted to `hooks/common`.
3. The `build` script runs `run_build()` from `hooks/common`.
This triggers either `build-branches.sh`, `build-latest.sh` or directly `build.sh`.
4. The `test` script just invokes `docker-compose` commands.
5. The `push` script runs `run_build()` from `hooks/common` with a `--push-only` flag.
This causes the `build.sh` script to not re-build the Docker image, but just the just built image.
The _Docker Tag_ configuration setting is misused to select the type (_release_, _prerelease_, _branches_) of the build as well as the variant (_main_, _ldap_).
The _Dockerfile location_ configuration setting is completely ignored by the build scripts.
[overwrite]: https://docs.docker.com/docker-hub/builds/advanced/#override-build-test-or-push-commands

108
build-all.sh
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@ -12,9 +12,9 @@ BUILDS=("${BUILD:-"${ALL_BUILDS[@]}"}")
echo "⚙️ Configured builds: ${BUILDS[*]}" echo "⚙️ Configured builds: ${BUILDS[*]}"
VARIANTS=("" "ldap") VARIANTS=("main" "ldap")
if [ ! -z "${DEBUG}" ]; then if [ -n "${DEBUG}" ]; then
export DEBUG export DEBUG
fi fi
@ -22,67 +22,63 @@ ERROR=0
# Don't build if not on `master` and don't build if on a pull request, # Don't build if not on `master` and don't build if on a pull request,
# but build when DEBUG is not empty # but build when DEBUG is not empty
if [ ! -z "${DEBUG}" ] || \ for VARIANT in "${VARIANTS[@]}"; do
( [ "$TRAVIS_BRANCH" = "master" ] && [ "$TRAVIS_PULL_REQUEST" = "false" ] ); then export VARIANT
for VARIANT in "${VARIANTS[@]}"; do
export VARIANT
# Checking which VARIANT to build # Checking which VARIANT to build
if [ -z "$VARIANT" ]; then if [ "${VARIANT}" == "main" ]; then
DOCKERFILE="Dockerfile" DOCKERFILE="${DOCKERFILE_PATH-Dockerfile}"
else else
DOCKERFILE="Dockerfile.${VARIANT}" DOCKERFILE="${DOCKERFILE_PATH-Dockerfile}.${VARIANT}"
# Fail fast # Fail fast
if [ ! -f "${DOCKERFILE}" ]; then if [ ! -f "${DOCKERFILE}" ]; then
echo "🚨 The Dockerfile '${DOCKERFILE}' for variant '${VARIANT}' doesn't exist." echo "🚨 The Dockerfile '${DOCKERFILE}' for variant '${VARIANT}' doesn't exist."
ERROR=1 ERROR=1
if [ -z "$DEBUG" ]; then if [ -z "$DEBUG" ]; then
continue continue
else else
echo "⚠️ Would skip this, but DEBUG is enabled." echo "⚠️ Would skip this, but DEBUG is enabled."
fi
fi fi
fi fi
fi
for BUILD in "${BUILDS[@]}"; do for BUILD in "${BUILDS[@]}"; do
echo "🛠 Building '$BUILD' from '$DOCKERFILE'" echo "🛠 Building '$BUILD' from '$DOCKERFILE'"
case $BUILD in case $BUILD in
release) release)
# build the latest release # build the latest release
# shellcheck disable=SC2068 # shellcheck disable=SC2068
./build-latest.sh $@ || ERROR=1 ./build-latest.sh $@ || ERROR=1
;; ;;
prerelease) prerelease)
# build the latest pre-release # build the latest pre-release
# shellcheck disable=SC2068 # shellcheck disable=SC2068
PRERELEASE=true ./build-latest.sh $@ || ERROR=1 PRERELEASE=true ./build-latest.sh $@ || ERROR=1
;; ;;
branches) branches)
# build all branches # build all branches
# shellcheck disable=SC2068 # shellcheck disable=SC2068
./build-branches.sh $@ || ERROR=1 ./build-branches.sh $@ || ERROR=1
;; ;;
special) special)
# special build # special build
# shellcheck disable=SC2068 # shellcheck disable=SC2068
#SRC_ORG=lampwins TAG=webhooks-backend ./build.sh "feature/webhooks-backend" $@ || ERROR=1 #SRC_ORG=lampwins TAG=webhooks-backend ./build.sh "feature/webhooks-backend" $@ || ERROR=1
;; echo "✅ No special builds today."
*) ;;
echo "🚨 Unrecognized build '$BUILD'." *)
echo "🚨 Unrecognized build '$BUILD'."
if [ -z "$DEBUG" ]; then if [ -z "$DEBUG" ]; then
exit 1 exit 1
else else
echo "⚠️ Would exit here with code '1', but DEBUG is enabled." echo "⚠️ Would exit here with code '1', but DEBUG is enabled."
fi fi
;; ;;
esac esac
done
done done
else done
echo "❎ Not building anything."
fi
exit $ERROR exit $ERROR

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build-branches.sh
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@ -3,7 +3,7 @@
echo "▶️ $0 $*" echo "▶️ $0 $*"
if [ ! -z "${GITHUB_OAUTH_CLIENT_ID}" ] && [ ! -z "${GITHUB_OAUTH_CLIENT_SECRET}" ]; then if [ -n "${GITHUB_OAUTH_CLIENT_ID}" ] && [ -n "${GITHUB_OAUTH_CLIENT_SECRET}" ]; then
echo "🗝 Performing authenticated Github API calls." echo "🗝 Performing authenticated Github API calls."
GITHUB_OAUTH_PARAMS="client_id=${GITHUB_OAUTH_CLIENT_ID}&client_secret=${GITHUB_OAUTH_CLIENT_SECRET}" GITHUB_OAUTH_PARAMS="client_id=${GITHUB_OAUTH_CLIENT_ID}&client_secret=${GITHUB_OAUTH_CLIENT_SECRET}"
else else

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build-latest.sh
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@ -3,7 +3,7 @@
echo "▶️ $0 $*" echo "▶️ $0 $*"
if [ ! -z "${GITHUB_OAUTH_CLIENT_ID}" ] && [ ! -z "${GITHUB_OAUTH_CLIENT_SECRET}" ]; then if [ -n "${GITHUB_OAUTH_CLIENT_ID}" ] && [ -n "${GITHUB_OAUTH_CLIENT_SECRET}" ]; then
echo "🗝 Performing authenticated Github API calls." echo "🗝 Performing authenticated Github API calls."
GITHUB_OAUTH_PARAMS="client_id=${GITHUB_OAUTH_CLIENT_ID}&client_secret=${GITHUB_OAUTH_CLIENT_SECRET}" GITHUB_OAUTH_PARAMS="client_id=${GITHUB_OAUTH_CLIENT_ID}&client_secret=${GITHUB_OAUTH_CLIENT_SECRET}"
else else

28
build.sh
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@ -6,9 +6,10 @@ echo "▶️ $0 $*"
set -e set -e
if [ "${1}x" == "x" ] || [ "${1}" == "--help" ] || [ "${1}" == "-h" ]; then if [ "${1}x" == "x" ] || [ "${1}" == "--help" ] || [ "${1}" == "-h" ]; then
echo "Usage: ${0} <branch> [--push]" echo "Usage: ${0} <branch> [--push|--push-only]"
echo " branch The branch or tag to build. Required." echo " branch The branch or tag to build. Required."
echo " --push Pushes built Docker image to docker hub." echo " --push Pushes built the Docker image to the registry."
echo " --push-only Does not build. Only pushes the Docker image to the registry."
echo "" echo ""
echo "You can use the following ENV variables to customize the build:" echo "You can use the following ENV variables to customize the build:"
echo " DEBUG If defined, the script does not stop when certain checks are unsatisfied." echo " DEBUG If defined, the script does not stop when certain checks are unsatisfied."
@ -49,8 +50,9 @@ if [ "${1}x" == "x" ] || [ "${1}" == "--help" ] || [ "${1}" == "-h" ]; then
echo " ARG FROM_TAG=latest" echo " ARG FROM_TAG=latest"
echo " FROM \$DOCKER_ORG/\$DOCKER_REPO:\$FROM_TAG" echo " FROM \$DOCKER_ORG/\$DOCKER_REPO:\$FROM_TAG"
echo " Example: VARIANT=ldap will result in the tag 'latest-ldap' and the" echo " Example: VARIANT=ldap will result in the tag 'latest-ldap' and the"
echo " Dockerfile 'Dockerfile.ldap' being used." echo " Dockerfile './Dockerfile.ldap' being used."
echo " Default: empty" echo " Exception: VARIANT=main will use the './Dockerfile' Dockerfile"
echo " Default: main"
echo " HTTP_PROXY The proxy to use for http requests." echo " HTTP_PROXY The proxy to use for http requests."
echo " Example: http://proxy.domain.tld:3128" echo " Example: http://proxy.domain.tld:3128"
echo " Default: empty" echo " Default: empty"
@ -95,7 +97,7 @@ esac
DOCKER_TAG="${DOCKER_TAG-${DOCKER_ORG}/${DOCKER_REPO}:${TAG}}" DOCKER_TAG="${DOCKER_TAG-${DOCKER_ORG}/${DOCKER_REPO}:${TAG}}"
# Checking which VARIANT to build # Checking which VARIANT to build
if [ -z "$VARIANT" ]; then if [ "$VARIANT" == "main" ]; then
DOCKERFILE="Dockerfile" DOCKERFILE="Dockerfile"
else else
DOCKERFILE="Dockerfile.${VARIANT}" DOCKERFILE="Dockerfile.${VARIANT}"
@ -117,8 +119,8 @@ DOCKER_OPTS=("${DOCKER_OPTS[@]}")
# caching is only ok for version tags # caching is only ok for version tags
case "${TAG}" in case "${TAG}" in
v*) ;; v*) ;;
*) DOCKER_OPTS+=( "--no-cache" ) ;; *) DOCKER_OPTS+=( "--no-cache" ) ;;
esac esac
DOCKER_OPTS+=( "--pull" ) DOCKER_OPTS+=( "--pull" )
@ -152,11 +154,13 @@ else
DOCKER_CMD="echo docker" DOCKER_CMD="echo docker"
fi fi
echo "🐳 Building the Docker image '${DOCKER_TAG}' from the url '${URL}'." if [ "${2}" != "--push-only" ] ; then
$DOCKER_CMD build -t "${DOCKER_TAG}" "${DOCKER_BUILD_ARGS[@]}" "${DOCKER_OPTS[@]}" -f "${DOCKERFILE}" . echo "🐳 Building the Docker image '${DOCKER_TAG}' from the url '${URL}'."
echo "✅ Finished building the Docker images '${DOCKER_TAG}'" $DOCKER_CMD build -t "${DOCKER_TAG}" "${DOCKER_BUILD_ARGS[@]}" "${DOCKER_OPTS[@]}" -f "${DOCKERFILE}" .
echo "✅ Finished building the Docker images '${DOCKER_TAG}'"
fi
if [ "${2}" == "--push" ] ; then if [ "${2}" == "--push" ] || [ "${2}" == "--push-only" ] ; then
echo "⏫ Pushing '${DOCKER_TAG}" echo "⏫ Pushing '${DOCKER_TAG}"
$DOCKER_CMD push "${DOCKER_TAG}" $DOCKER_CMD push "${DOCKER_TAG}"
echo "✅ Finished pushing the Docker image '${DOCKER_TAG}'." echo "✅ Finished pushing the Docker image '${DOCKER_TAG}'."

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hooks/build Executable file
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#!/bin/bash
. hooks/common
run_build

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hooks/common Executable file
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#!/bin/bash
ensure_jq() {
echo "🛠🛠🛠 Installing JQ via apt-get"
[ -x "$(command -v jq)" ] || ( apt-get update && apt-get install -y jq )
}
ensure_dockerfile_present() {
if [ "${VARIANT}" == "main" ]; then
DOCKERFILE="Dockerfile"
else
DOCKERFILE="Dockerfile.${VARIANT}"
# Fail fast
if [ ! -f "${DOCKERFILE}" ]; then
echo "🚨 The Dockerfile '${DOCKERFILE}' for variant '${VARIANT}' doesn't exist."
if [ -z "$DEBUG" ]; then
exit 1
else
echo "⚠️ Would skip this, but DEBUG is enabled."
fi
fi
if [ "${DOCKERFILE}" != "${DOCKERFILE_PATH}" ]; then
echo "⚠️ The specified Dockerfile '${DOCKERFILE_PATH}' does not match the expected Dockerfile '${DOCKERFILE}'."
echo " This script will use '${DOCKERFILE}' and ignore '${DOCKERFILE_PATH}'."
fi
fi
}
# Passes args to the scripts
run_build() {
echo "🐳🐳🐳 Building '${BUILD}' images, the '${VARIANT:-main}' variant"
case $BUILD in
release)
# build the latest release
# shellcheck disable=SC2068
./build-latest.sh $@
;;
prerelease)
# build the latest pre-release
# shellcheck disable=SC2068
PRERELEASE=true ./build-latest.sh $@
;;
branches)
# build all branches
# shellcheck disable=SC2068
./build-branches.sh $@
;;
special)
# special build
# shellcheck disable=SC2068
#SRC_ORG=lampwins TAG=webhooks-backend ./build.sh "feature/webhooks-backend" $@
echo "✅ No special builds today."
;;
*)
echo "🚨 Unrecognized build '$BUILD'."
if [ -z "$DEBUG" ]; then
exit 1
else
echo "⚠️ Would exit here with code '1', but DEBUG is enabled."
fi
;;
esac
}
echo "🤖🤖🤖 Preparing build"
export DOCKER_ORG="index.docker.io/cimnine"
export DOCKER_REPO=netbox-test
export DOCKERHUB_REPO=cimnine/netbox-test
# mis-using the "${DOCKER_TAG}" variable as "branch to build"
export BUILD="${DOCKER_TAG%-*}"
export VARIANT="${DOCKER_TAG#*-}"
unset DOCKER_TAG
ensure_dockerfile_present
ensure_jq

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hooks/push Executable file
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#!/bin/bash
. hooks/common
run_build --push-only

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hooks/test Executable file
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#!/bin/bash
. hooks/common
if [ "${VARIANT}" == "main" ] && [ "${BUILD}" == "BRANCHES" ]; then
echo "🐳🐳🐳 Testing"
docker-compose pull --parallel
docker-compose build
docker-compose run netbox ./manage.py test
else
echo "🐳🐳🐳 No tests are implemented for build '${BUILD}' with variant '${VARIANT}'."
fi