netbox-docker/build.sh
2019-10-15 00:34:15 +02:00

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#!/bin/bash
# Builds the Dockerfile and injects tgz'ed Netbox code from Github
echo "▶️ $0 $*"
set -e
if [ "${1}x" == "x" ] || [ "${1}" == "--help" ] || [ "${1}" == "-h" ]; then
echo "Usage: ${0} <branch> [--push|--push-only]"
echo " branch The branch or tag to build. Required."
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 "You can use the following ENV variables to customize the build:"
echo " BRANCH The branch to build."
echo " Also used for tagging the image."
echo " TAG The version part of the docker tag."
echo " Default:"
echo " When <BRANCH>=master: latest"
echo " When <BRANCH>=develop: snapshot"
echo " Else: same as <BRANCH>"
echo " DOCKER_OPTS Add parameters to Docker."
echo " Default:"
echo " When <TAG> starts with 'v': \"\""
echo " Else: \"--no-cache\""
echo " DOCKER_ORG The Docker registry (i.e. hub.docker.com/r/<DOCKER_ORG>/<DOCKER_REPO>)"
echo " Also used for tagging the image."
echo " Default: netboxcommunity"
echo " DOCKER_REPO The Docker registry (i.e. hub.docker.com/r/<DOCKER_ORG>/<DOCKER_REPO>)"
echo " Also used for tagging the image."
echo " Default: netbox"
echo " DOCKER_FROM The base image to use."
echo " Default: Whatever is defined as default in the Dockerfile."
echo " DOCKER_TAG The name of the tag which is applied to the image."
echo " Useful for pushing into another registry than hub.docker.com."
echo " Default: <DOCKER_ORG>/<DOCKER_REPO>:<BRANCH>"
echo " DOCKER_SHORT_TAG The name of the short tag which is applied to the"
echo " image. This is used to tag all patch releases to their"
echo " containing version e.g. v2.5.1 -> v2.5"
echo " Default: <DOCKER_ORG>/<DOCKER_REPO>:\$MAJOR.\$MINOR"
echo " DOCKERFILE The name of Dockerfile to use."
echo " Default: Dockerfile"
echo " DOCKER_TARGET A specific target to build."
echo " It's currently not possible to pass multiple targets."
echo " Default: main ldap"
echo " SRC_ORG Which fork of netbox to use (i.e. github.com/<SRC_ORG>/<SRC_REPO>)."
echo " Default: netbox-community"
echo " SRC_REPO The name of the netbox for to use (i.e. github.com/<SRC_ORG>/<SRC_REPO>)."
echo " Default: netbox"
echo " URL Where to fetch the package from."
echo " Must be a tar.gz file of the source code."
echo " Default: https://github.com/<SRC_ORG>/<SRC_REPO>/archive/\$BRANCH.tar.gz"
echo " HTTP_PROXY The proxy to use for http requests."
echo " Example: http://proxy.domain.tld:3128"
echo " Default: empty"
echo " HTTPS_PROXY The proxy to use for https requests."
echo " Example: http://proxy.domain.tld:3128"
echo " Default: empty"
echo " FTP_PROXY The proxy to use for ftp requests."
echo " Example: http://proxy.domain.tld:3128"
echo " Default: empty"
echo " NO_PROXY Comma-separated list of domain extensions proxy should not be used for."
echo " Example: .domain1.tld,.domain2.tld"
echo " Default: empty"
echo " DEBUG If defined, the script does not stop when certain checks are unsatisfied."
echo " DRY_RUN Prints all build statements instead of running them."
if [ "${1}x" == "x" ]; then
exit 1
else
exit 0
fi
fi
###
# read the project version from the `VERSION` file and trim it
# see https://stackoverflow.com/a/3232433/172132
###
NETBOX_DOCKER_PROJECT_VERSION="${NETBOX_DOCKER_PROJECT_VERSION-$(sed -e 's/^[[:space:]]*//' -e 's/[[:space:]]*$//' VERSION)}"
###
# variables for fetching the source
###
SRC_ORG="${SRC_ORG-netbox-community}"
SRC_REPO="${SRC_REPO-netbox}"
BRANCH="${1}"
URL="${URL-https://github.com/${SRC_ORG}/${SRC_REPO}/archive/$BRANCH.tar.gz}"
###
# Determining the value for DOCKERFILE
# and checking whether it exists
###
DOCKERFILE="${DOCKERFILE-Dockerfile}"
if [ ! -f "${DOCKERFILE}" ]; then
echo "🚨 The Dockerfile ${DOCKERFILE} doesn't exist."
if [ -z "$DEBUG" ]; then
exit 1
else
echo "⚠️ Would exit here with code '1', but DEBUG is enabled."
fi
fi
###
# variables for tagging the docker image
###
DOCKER_ORG="${DOCKER_ORG-netboxcommunity}"
DOCKER_REPO="${DOCKER_REPO-netbox}"
case "${BRANCH}" in
master)
TAG="${TAG-latest}";;
develop)
TAG="${TAG-snapshot}";;
*)
TAG="${TAG-$BRANCH}";;
esac
###
# Determine targets to build
###
DEFAULT_DOCKER_TARGETS=("main" "ldap")
DOCKER_TARGETS=( "${DOCKER_TARGET:-"${DEFAULT_DOCKER_TARGETS[@]}"}")
echo "🏭 Building the following targets:" "${DOCKER_TARGETS[@]}"
###
# Build each target
###
for DOCKER_TARGET in "${DOCKER_TARGETS[@]}"; do
echo "🏗 Building the target '$DOCKER_TARGET'"
###
# composing the final DOCKER_TAG
###
DOCKER_TAG="${DOCKER_TAG-${DOCKER_ORG}/${DOCKER_REPO}:${TAG}}"
if [ "$DOCKER_TARGET" != "main" ]; then
DOCKER_TAG="${DOCKER_TAG}-${DOCKER_TARGET}"
fi
###
# composing the additional DOCKER_SHORT_TAG,
# i.e. "v2.6.1" becomes "v2.6",
# which is only relevant for version tags
###
if [[ "${TAG}" =~ ^v([0-9]+)\.([0-9]+)\.[0-9]+$ ]]; then
MAJOR=${BASH_REMATCH[1]}
MINOR=${BASH_REMATCH[2]}
DOCKER_SHORT_TAG="${DOCKER_SHORT_TAG-${DOCKER_ORG}/${DOCKER_REPO}:v${MAJOR}.${MINOR}}"
if [ "$DOCKER_TARGET" != "main" ]; then
DOCKER_SHORT_TAG="${DOCKER_SHORT_TAG}-${DOCKER_TARGET}"
fi
fi
###
# Composing global Docker CLI arguments
###
DOCKER_OPTS=("${DOCKER_OPTS[@]}")
# caching is only ok for version tags,
# but turning the cache off is only required for the
# first build target, usually "main".
case "${TAG}" in
v*) ;;
*) [ "$DOCKER_TARGET" == "${DOCKER_TARGETS[0]}" ] && DOCKER_OPTS+=( --no-cache ) ;;
esac
DOCKER_OPTS+=( --pull )
DOCKER_OPTS+=( --target "$DOCKER_TARGET" )
###
# Composing arguments for `docker build` CLI
###
DOCKER_BUILD_ARGS=(
--build-arg "NETBOX_DOCKER_PROJECT_VERSION=${NETBOX_DOCKER_PROJECT_VERSION}"
--build-arg "BRANCH=${BRANCH}"
--build-arg "URL=${URL}"
--build-arg "DOCKER_ORG=${DOCKER_ORG}"
--build-arg "DOCKER_REPO=${DOCKER_REPO}"
)
if [ -n "$DOCKER_FROM" ]; then
DOCKER_BUILD_ARGS+=( --build-arg "FROM=${DOCKER_FROM}" )
fi
if [ -n "$HTTP_PROXY" ]; then
DOCKER_BUILD_ARGS+=( --build-arg "http_proxy=${HTTP_PROXY}" )
fi
if [ -n "$HTTPS_PROXY" ]; then
DOCKER_BUILD_ARGS+=( --build-arg "https_proxy=${HTTPS_PROXY}" )
fi
if [ -n "$FTP_PROXY" ]; then
DOCKER_BUILD_ARGS+=( --build-arg "ftp_proxy=${FTP_PROXY}" )
fi
if [ -n "$NO_PROXY" ]; then
DOCKER_BUILD_ARGS+=( --build-arg "no_proxy=${NO_PROXY}" )
fi
###
# Determining the build command to use
###
if [ -z "$DRY_RUN" ]; then
DOCKER_CMD="docker"
else
echo "⚠️ DRY_RUN MODE ON ⚠️"
DOCKER_CMD="echo docker"
fi
###
# Building the docker images, except if `--push-only` is passed
###
if [ "${2}" != "--push-only" ] ; then
echo "🐳 Building the Docker image '${DOCKER_TAG}' from the url '${URL}'."
$DOCKER_CMD build -t "${DOCKER_TAG}" "${DOCKER_BUILD_ARGS[@]}" "${DOCKER_OPTS[@]}" -f "${DOCKERFILE}" .
echo "✅ Finished building the Docker images '${DOCKER_TAG}'"
if [ -n "$DOCKER_SHORT_TAG" ]; then
echo "🐳 Tagging image '${DOCKER_SHORT_TAG}'."
$DOCKER_CMD tag "${DOCKER_TAG}" "${DOCKER_SHORT_TAG}"
echo "✅ Tagged image '${DOCKER_SHORT_TAG}'"
fi
fi
###
# Pushing the docker images if either `--push` or `--push-only` are passed
###
if [ "${2}" == "--push" ] || [ "${2}" == "--push-only" ] ; then
echo "⏫ Pushing '${DOCKER_TAG}"
$DOCKER_CMD push "${DOCKER_TAG}"
echo "✅ Finished pushing the Docker image '${DOCKER_TAG}'."
if [ -n "$DOCKER_SHORT_TAG" ]; then
echo "⏫ Pushing '${DOCKER_SHORT_TAG}'"
$DOCKER_CMD push "${DOCKER_SHORT_TAG}"
echo "✅ Finished pushing the Docker image '${DOCKER_SHORT_TAG}'."
fi
fi
done