gitlab-build-images/scripts/lib/custom-docker.sh
2024-05-07 10:48:03 +00:00

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# Note: Check out https://wiki.bash-hackers.org/syntax/pe for documentation on
# various variable operations used in this script.
PATH_TOOLS=(DEBIAN OS UBI RUBY GOLANG RUST NODE POSTGRESQL)
TAG_TOOLS=(BUNDLER RUBYGEMS GIT LFS CHROME YARN GRAPHICSMAGICK EXIFTOOL BAZELISK DOCKER GCLOUD KUBECTL HELM HELM_KUBECONFORM KIND VCLUSTER AWSCLI)
# Generate the docker image path using the components that were specified via
# variables.
# For example, consider a CI job which specifies the following variables:
# OS: debian:bullseye
# RUBY: 3.0
# GOLANG: 1.19
# RUST: 1.73.0
# GIT: 2.33
# POSTGRESQL: 11
# With the above variables, this function will return
# `debian-bullseye-ruby-2.7-golang-1.19-postgresql-11`
function get_image_path() {
local path
path=""
for tool in "${PATH_TOOLS[@]}"; do
if [[ -n "${!tool}" ]]; then
if [[ "${tool}" == "OS" ]]; then
# The OS variable's value is following <distro>:<version>
# format. We split that string into individual components.
distro=${!tool%:*}
version=${!tool#*:}
path="${path}-${distro}-${version}"
else
# Convert the tool name into lowercase using `,,` operator
path="${path}-${tool,,}-${!tool}"
fi
fi
done
if [[ -n "$path" ]]; then
echo "$CI_REGISTRY_IMAGE/${path:1}"
else
echo "$CI_REGISTRY_IMAGE"
fi
}
# Generate the image tag using the components that were specified via variables.
# For example, consider a CI job which specifies the following variables:
# OS: debian:bullseye
# RUBY: 2.7
# GOLANG: 1.19
# RUST: 1.73.0
# GIT: 2.33
# POSTGRESQL: 11
# For that job, this function will return
# `git-2.33`
function get_image_tag() {
local tag
tag=""
for tool in "${TAG_TOOLS[@]}"; do
if [[ -n "${!tool}" ]]; then
# Convert the tool name into lowercase using `,,` operator
tag="${tag}-${tool,,}-${!tool}"
fi
done
if [[ -n "$tag" ]]; then
echo "${tag:1}"
else
echo "latest"
fi
}