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entrypoint.sh
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entrypoint.sh
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#!/usr/bin/dumb-init /bin/bash
# shellcheck shell=bash
export RUNNER_ALLOW_RUNASROOT=1
export PATH=${PATH}:/actions-runner
# Un-export these, so that they must be passed explicitly to the environment of
# any command that needs them. This may help prevent leaks.
export -n ACCESS_TOKEN
export -n RUNNER_TOKEN
export -n APP_ID
export -n APP_PRIVATE_KEY
trap_with_arg() {
func="$1" ; shift
for sig ; do
trap "$func $sig" "$sig"
done
}
deregister_runner() {
echo "Caught $1 - Deregistering runner"
if [[ -n "${ACCESS_TOKEN}" ]]; then
_TOKEN=$(ACCESS_TOKEN="${ACCESS_TOKEN}" bash /token.sh)
RUNNER_TOKEN=$(echo "${_TOKEN}" | jq -r .token)
fi
./config.sh remove --token "${RUNNER_TOKEN}"
exit
}
_DISABLE_AUTOMATIC_DEREGISTRATION=${DISABLE_AUTOMATIC_DEREGISTRATION:-false}
_RANDOM_RUNNER_SUFFIX=${RANDOM_RUNNER_SUFFIX:="true"}
_RUNNER_NAME=${RUNNER_NAME:-${RUNNER_NAME_PREFIX:-github-runner}-$(head /dev/urandom | tr -dc A-Za-z0-9 | head -c 13 ; echo '')}
if [[ ${RANDOM_RUNNER_SUFFIX} != "true" ]]; then
# In some cases this file does not exist
if [[ -f "/etc/hostname" ]]; then
# in some cases it can also be empty
if [[ $(stat --printf="%s" /etc/hostname) -ne 0 ]]; then
_RUNNER_NAME=${RUNNER_NAME:-${RUNNER_NAME_PREFIX:-github-runner}-$(cat /etc/hostname)}
echo "RANDOM_RUNNER_SUFFIX is ${RANDOM_RUNNER_SUFFIX}. /etc/hostname exists and has content. Setting runner name to ${_RUNNER_NAME}"
else
echo "RANDOM_RUNNER_SUFFIX is ${RANDOM_RUNNER_SUFFIX} ./etc/hostname exists but is empty. Not using /etc/hostname."
fi
else
echo "RANDOM_RUNNER_SUFFIX is ${RANDOM_RUNNER_SUFFIX} but /etc/hostname does not exist. Not using /etc/hostname."
fi
fi
_RUNNER_WORKDIR=${RUNNER_WORKDIR:-/_work/${_RUNNER_NAME}}
_LABELS=${LABELS:-default}
_RUNNER_GROUP=${RUNNER_GROUP:-Default}
_GITHUB_HOST=${GITHUB_HOST:="github.com"}
_RUN_AS_ROOT=${RUN_AS_ROOT:="true"}
_START_DOCKER_SERVICE=${START_DOCKER_SERVICE:="false"}
# ensure backwards compatibility
if [[ -z ${RUNNER_SCOPE} ]]; then
if [[ ${ORG_RUNNER} == "true" ]]; then
echo 'ORG_RUNNER is now deprecated. Please use RUNNER_SCOPE="org" instead.'
export RUNNER_SCOPE="org"
else
export RUNNER_SCOPE="repo"
fi
fi
RUNNER_SCOPE="${RUNNER_SCOPE,,}" # to lowercase
case ${RUNNER_SCOPE} in
org*)
[[ -z ${ORG_NAME} ]] && ( echo "ORG_NAME required for org runners"; exit 1 )
_SHORT_URL="https://${_GITHUB_HOST}/${ORG_NAME}"
RUNNER_SCOPE="org"
if [[ -n "${APP_ID}" ]] && [[ -z "${APP_LOGIN}" ]]; then
APP_LOGIN=${ORG_NAME}
fi
;;
ent*)
[[ -z ${ENTERPRISE_NAME} ]] && ( echo "ENTERPRISE_NAME required for enterprise runners"; exit 1 )
_SHORT_URL="https://${_GITHUB_HOST}/enterprises/${ENTERPRISE_NAME}"
RUNNER_SCOPE="enterprise"
;;
*)
[[ -z ${REPO_URL} ]] && ( echo "REPO_URL required for repo runners"; exit 1 )
_SHORT_URL=${REPO_URL}
RUNNER_SCOPE="repo"
if [[ -n "${APP_ID}" ]] && [[ -z "${APP_LOGIN}" ]]; then
APP_LOGIN=${REPO_URL%/*}
APP_LOGIN=${APP_LOGIN##*/}
fi
;;
esac
configure_runner() {
ARGS=()
if [[ -n "${APP_ID}" ]] && [[ -n "${APP_PRIVATE_KEY}" ]] && [[ -n "${APP_LOGIN}" ]]; then
if [[ -n "${ACCESS_TOKEN}" ]] || [[ -n "${RUNNER_TOKEN}" ]]; then
echo "ERROR: ACCESS_TOKEN or RUNNER_TOKEN provided but are mutually exclusive with APP_ID, APP_PRIVATE_KEY and APP_LOGIN." >&2
exit 1
fi
echo "Obtaining access token for app_id ${APP_ID} and login ${APP_LOGIN}"
nl="
"
ACCESS_TOKEN=$(APP_ID="${APP_ID}" APP_PRIVATE_KEY="${APP_PRIVATE_KEY//\\n/${nl}}" APP_LOGIN="${APP_LOGIN}" bash /app_token.sh)
elif [[ -n "${APP_ID}" ]] || [[ -n "${APP_PRIVATE_KEY}" ]] || [[ -n "${APP_LOGIN}" ]]; then
echo "ERROR: All of APP_ID, APP_PRIVATE_KEY and APP_LOGIN must be specified." >&2
exit 1
fi
if [[ -n "${ACCESS_TOKEN}" ]]; then
echo "Obtaining the token of the runner"
_TOKEN=$(ACCESS_TOKEN="${ACCESS_TOKEN}" bash /token.sh)
RUNNER_TOKEN=$(echo "${_TOKEN}" | jq -r .token)
fi
# shellcheck disable=SC2153
if [ -n "${EPHEMERAL}" ]; then
echo "Ephemeral option is enabled"
ARGS+=("--ephemeral")
fi
if [ -n "${DISABLE_AUTO_UPDATE}" ]; then
echo "Disable auto update option is enabled"
ARGS+=("--disableupdate")
fi
if [ -n "${NO_DEFAULT_LABELS}" ]; then
echo "Disable adding the default self-hosted, platform, and architecture labels"
ARGS+=("--no-default-labels")
fi
echo "Configuring"
./config.sh \
--url "${_SHORT_URL}" \
--token "${RUNNER_TOKEN}" \
--name "${_RUNNER_NAME}" \
--work "${_RUNNER_WORKDIR}" \
--labels "${_LABELS}" \
--runnergroup "${_RUNNER_GROUP}" \
--unattended \
--replace \
"${ARGS[@]}"
[[ ! -d "${_RUNNER_WORKDIR}" ]] && mkdir "${_RUNNER_WORKDIR}"
}
# Opt into runner reusage because a value was given
if [[ -n "${CONFIGURED_ACTIONS_RUNNER_FILES_DIR}" ]]; then
echo "Runner reusage is enabled"
# directory exists, copy the data
if [[ -d "${CONFIGURED_ACTIONS_RUNNER_FILES_DIR}" ]]; then
echo "Copying previous data"
cp -p -r "${CONFIGURED_ACTIONS_RUNNER_FILES_DIR}/." "/actions-runner"
fi
if [ -f "/actions-runner/.runner" ]; then
echo "The runner has already been configured"
else
configure_runner
fi
else
echo "Runner reusage is disabled"
configure_runner
fi
if [[ -n "${CONFIGURED_ACTIONS_RUNNER_FILES_DIR}" ]]; then
echo "Reusage is enabled. Storing data to ${CONFIGURED_ACTIONS_RUNNER_FILES_DIR}"
# Quoting (even with double-quotes) the regexp brokes the copying
cp -p -r "/actions-runner/_diag" "/actions-runner/svc.sh" /actions-runner/.[^.]* "${CONFIGURED_ACTIONS_RUNNER_FILES_DIR}"
fi
if [[ ${_DISABLE_AUTOMATIC_DEREGISTRATION} == "false" ]]; then
trap_with_arg deregister_runner SIGINT SIGQUIT SIGTERM INT TERM QUIT
fi
# Start docker service if needed (e.g. for docker-in-docker)
if [[ ${_START_DOCKER_SERVICE} == "true" ]]; then
echo "Starting docker service"
_PREFIX=""
[[ ${_RUN_AS_ROOT} != "true" ]] && _PREFIX="sudo"
${_PREFIX} service docker start
fi
# Container's command (CMD) execution as runner user
if [[ ${_RUN_AS_ROOT} == "true" ]]; then
if [[ $(id -u) -eq 0 ]]; then
"$@"
else
echo "ERROR: RUN_AS_ROOT env var is set to true but the user has been overridden and is not running as root, but UID '$(id -u)'"
exit 1
fi
else
if [[ $(id -u) -eq 0 ]]; then
[[ -n "${CONFIGURED_ACTIONS_RUNNER_FILES_DIR}" ]] && chown -R runner "${CONFIGURED_ACTIONS_RUNNER_FILES_DIR}"
chown -R runner "${_RUNNER_WORKDIR}" /actions-runner
# The toolcache is not recursively chowned to avoid recursing over prepulated tooling in derived docker images
chown runner /opt/hostedtoolcache/
/usr/sbin/gosu runner "$@"
else
"$@"
fi
fi