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#!/bin/bash | |
# This script build docker images and create docker tags using git tags with Semantic Versioning pattern | |
# https://semver.org/spec/v2.0.0.html | |
# However, it only partially supports pre-release tags as mentioned in part 9 (https://semver.org/spec/v2.0.0.html#spec-item-9) | |
# Supported git tags: v1.0.0, v1.0.0-beta.1, v1.0.0-alpha.1 | |
# Array of repos for the docker image | |
REPOS=("<REPO_URL_1>" "<REPO_URL_2>") | |
SEMANTIC_VERSION_PATTERN="^v([0-9]+)\.([0-9]+)\.([0-9]+)(-([A-Za-z-]+(\.[0-9A-Za-z-]+)?))?$" | |
usage() { | |
echo "Usage: $0 [options...]" 1>&2 | |
echo "-f Forces clean build, if HEAD is ahead of git tag" 1>&2 | |
echo "-r Pushs the docker images" 1>&2 | |
echo "-t Test run, only prints docker image tags" 1>&2 | |
exit 1 | |
} | |
while getopts ":frt" o; do | |
case "${o}" in | |
f) | |
FORCE="true" | |
;; | |
r) | |
RELEASE="true" | |
;; | |
t) | |
DRY_RUN="true" | |
;; | |
*) | |
usage | |
;; | |
esac | |
done | |
shift $((OPTIND - 1)) | |
if [ "$1" = "--help" ] || [ "$1" = "-h" ]; then | |
usage | |
fi | |
# get the last tag which matches the semantic versioning pattern | |
VERSION_TAG=$(git describe --tags --abbrev=0 --match "v*.*.*" 2>/dev/null) | |
# if it is a gitlab job, it uses the CI_COMMIT_TAG | |
if [[ "$CI_COMMIT_TAG" =~ $SEMANTIC_VERSION_PATTERN ]]; then | |
echo "Build from CI_COMMIT_TAG: $CI_COMMIT_TAG" | |
VERSION_TAG="$CI_COMMIT_TAG" | |
fi | |
if [ -z "$VERSION_TAG" ]; then | |
echo "Keine Git-Versions-Tags vorhanden" 1>&2 | |
exit 1 | |
fi | |
# If there are changes in the tree and/or the version tag is behind the HEAD, the build is "dirty". | |
# However, a nigthly tag is ALWAYS created | |
GIT_REVISION=$(git rev-parse --short HEAD) | |
SUFFIX="" | |
if [ -n "$(git status --porcelain)" ]; then | |
echo "Dirty build..." | |
SUFFIX="-dirty" | |
fi | |
# If HEAD is ahead of the version tag, we also have a dirty build | |
if [ "$(git rev-list -n 1 $VERSION_TAG)" != "$(git rev-parse HEAD)" ] && [ "$SUFFIX" = "" ]; then | |
echo "Dirty build..." | |
SUFFIX="-dirty" | |
fi | |
# remove the suffix if we force a clean build | |
if [[ "$FORCE" == "true" ]]; then SUFFIX=""; fi | |
# Extract Major Minor, Patch and Pre-release | |
MAJOR="" | |
MINOR="" | |
PATCH="" | |
PRE_RELEASE="" | |
if [[ $VERSION_TAG =~ $SEMANTIC_VERSION_PATTERN ]]; then | |
MAJOR="${BASH_REMATCH[1]}" | |
MINOR="${BASH_REMATCH[2]}" | |
PATCH="${BASH_REMATCH[3]}" | |
PRE_RELEASE="${BASH_REMATCH[5]}" | |
test -n "$PRE_RELEASE" && PRE_RELEASE="-${PRE_RELEASE}" | |
else | |
echo "invalid Semantic Versioning Tag (source: https://semver.org/spec/v2.0.0.html)" | |
exit 1 | |
fi | |
VERSION="${MAJOR}.${MINOR}.${PATCH}${PRE_RELEASE}${SUFFIX}" | |
if [[ "$DRY_RUN" == "true" ]]; then | |
echo "=== Images ===" | |
for IMAGE_TAG in ${REPOS[@]}; do | |
echo | |
echo "$IMAGE_TAG:nightly" | |
test -z "$PRE_RELEASE" && echo "$IMAGE_TAG:latest${SUFFIX}" | |
echo "$IMAGE_TAG:${MAJOR}${PRE_RELEASE}${SUFFIX}" | |
echo "$IMAGE_TAG:${MAJOR}.${MINOR}${PRE_RELEASE}${SUFFIX}" | |
echo "$IMAGE_TAG:${MAJOR}.${MINOR}.${PATCH}${PRE_RELEASE}${SUFFIX}" | |
echo "$IMAGE_TAG:${MAJOR}.${MINOR}.${PATCH}${PRE_RELEASE}${SUFFIX}-${GIT_REVISION}" | |
echo | |
done | |
exit 0 | |
fi | |
# build the --tag args for the build command | |
TAGS= | |
for IMAGE in ${REPOS[@]}; do | |
TAGS+=" --tag $IMAGE:nightly" | |
test -z "$PRE_RELEASE" && TAGS+=" --tag $IMAGE:latest${SUFFIX}" # only latest if we haven't a pre-release | |
TAGS+=" --tag $IMAGE:${MAJOR}${PRE_RELEASE}${SUFFIX}" | |
TAGS+=" --tag $IMAGE:${MAJOR}.${MINOR}${PRE_RELEASE}${SUFFIX}" | |
TAGS+=" --tag $IMAGE:${MAJOR}.${MINOR}.${PATCH}${PRE_RELEASE}${SUFFIX}" | |
TAGS+=" --tag $IMAGE:${MAJOR}.${MINOR}.${PATCH}${PRE_RELEASE}${SUFFIX}-${GIT_REVISION}" | |
done | |
docker build $TAGS \ | |
--build-arg VERSION="$VERSION" \ | |
--build-arg GIT_REVISION="$GIT_REVISION" \ | |
--build-arg DATE="$(date +%Y-%m-%dT%H:%M:%S%z)" . | |
if [[ $? == 0 ]] && [[ "$RELEASE" == "true" ]]; then | |
for IMAGE_TAG in ${REPOS[@]}; do | |
docker push "$IMAGE_TAG:nightly" | |
test -z "$PRE_RELEASE" && docker push "$IMAGE_TAG:latest${SUFFIX}" # only latest if we haven't a pre-release | |
docker push "$IMAGE_TAG:${MAJOR}${PRE_RELEASE}${SUFFIX}" | |
docker push "$IMAGE_TAG:${MAJOR}.${MINOR}${PRE_RELEASE}${SUFFIX}" | |
docker push "$IMAGE_TAG:${MAJOR}.${MINOR}.${PATCH}${PRE_RELEASE}${SUFFIX}" | |
docker push "$IMAGE_TAG:${MAJOR}.${MINOR}.${PATCH}${PRE_RELEASE}${SUFFIX}-${GIT_REVISION}" | |
done | |
fi |
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