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plugin-kaniko/plugin.sh

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#!/busybox/sh
set -euo pipefail
export PATH=$PATH:/kaniko/
REGISTRY=${PLUGIN_REGISTRY:-index.docker.io}
if [ "${PLUGIN_USERNAME:-}" ] || [ "${PLUGIN_PASSWORD:-}" ]; then
DOCKER_AUTH=`echo -n "${PLUGIN_USERNAME}:${PLUGIN_PASSWORD}" | base64 | tr -d "\n"`
cat > /kaniko/.docker/config.json <<DOCKERJSON
{
"auths": {
"${REGISTRY}": {
"auth": "${DOCKER_AUTH}"
}
}
}
DOCKERJSON
fi
if [ "${PLUGIN_JSON_KEY:-}" ];then
echo "${PLUGIN_JSON_KEY}" > /kaniko/gcr.json
export GOOGLE_APPLICATION_CREDENTIALS=/kaniko/gcr.json
fi
DOCKERFILE=${PLUGIN_DOCKERFILE:-Dockerfile}
CONTEXT=${PLUGIN_CONTEXT:-$PWD}
LOG=${PLUGIN_LOG:-info}
EXTRA_OPTS=""
if [[ -n "${PLUGIN_TARGET:-}" ]]; then
TARGET="--target=${PLUGIN_TARGET}"
fi
if [[ "${PLUGIN_SKIP_TLS_VERIFY:-}" == "true" ]]; then
EXTRA_OPTS="--skip-tls-verify=true"
fi
if [[ "${PLUGIN_CACHE:-}" == "true" ]]; then
CACHE="--cache=true"
fi
if [ -n "${PLUGIN_BUILD_ARGS:-}" ]; then
BUILD_ARGS=$(echo "${PLUGIN_BUILD_ARGS}" | tr ',' '\n' | while read build_arg; do echo "--build-arg=${build_arg}"; done)
fi
if [ -n "${PLUGIN_BUILD_ARGS_FROM_ENV:-}" ]; then
BUILD_ARGS_FROM_ENV=$(echo "${PLUGIN_BUILD_ARGS_FROM_ENV}" | tr ',' '\n' | while read build_arg; do echo "--build-arg ${build_arg}=$(eval "echo \$$build_arg")"; done)
fi
# auto_tag, if set auto_tag: true, auto generate .tags file
# support format Major.Minor.Release or start with `v`
# docker tags: Major, Major.Minor, Major.Minor.Release and latest
if [[ "${PLUGIN_AUTO_TAG:-}" == "true" ]]; then
TAG=$(echo "${DRONE_TAG:-}" |sed 's/^v//g')
part=$(echo "${TAG}" |tr '.' '\n' |wc -l)
# expect number
echo ${TAG} |grep -E "[a-z-]" &>/dev/null && isNum=1 || isNum=0
if [ ! -n "${TAG:-}" ];then
echo "latest" > .tags
elif [ ${isNum} -eq 1 -o ${part} -gt 3 ];then
echo "${TAG},latest" > .tags
else
major=$(echo "${TAG}" |awk -F'.' '{print $1}')
minor=$(echo "${TAG}" |awk -F'.' '{print $2}')
release=$(echo "${TAG}" |awk -F'.' '{print $3}')
major=${major:-0}
minor=${minor:-0}
release=${release:-0}
echo "${major},${major}.${minor},${major}.${minor}.${release},latest" > .tags
fi
fi
if [ -n "${PLUGIN_TAGS:-}" ]; then
DESTINATIONS=$(echo "${PLUGIN_TAGS}" | tr ',' '\n' | while read tag; do echo "--destination=${REGISTRY}/${PLUGIN_REPO}:${tag} "; done)
elif [ -f .tags ]; then
DESTINATIONS=$(cat .tags| tr ',' '\n' | while read tag; do echo "--destination=${REGISTRY}/${PLUGIN_REPO}:${tag} "; done)
elif [ -n "${PLUGIN_REPO:-}" ]; then
DESTINATIONS="--destination=${REGISTRY}/${PLUGIN_REPO}:latest"
else
DESTINATIONS="--no-push"
# Cache is not valid with --no-push
CACHE=""
fi
/kaniko/executor -v ${LOG} \
--context=${CONTEXT} \
--dockerfile=${DOCKERFILE} \
${EXTRA_OPTS} \
${DESTINATIONS} \
${CACHE:-} \
${TARGET:-} \
${BUILD_ARGS:-} \
${BUILD_ARGS_FROM_ENV:-}