Snck3rs/docker-crontab
Snck3rs/docker-crontab
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using tini, functions for most code in entrypoint

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This commit is contained in:
Omar Ahmad 2019-09-03 13:15:31 -04:00
parent 4a0d85f51a
commit 4f9146b8f8
2 changed files with 29 additions and 23 deletions
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4
Dockerfile
View File

@ -1,12 +1,12 @@
FROM library/docker:stable FROM library/docker:stable
ENV HOME_DIR=/opt/crontab ENV HOME_DIR=/opt/crontab
RUN apk add --no-cache --virtual .run-deps gettext bash py3-toml py3-yaml python3 jq \ RUN apk add --no-cache --virtual .run-deps gettext bash py3-toml py3-yaml python3 jq tini \
&& mkdir -p ${HOME_DIR}/jobs ${HOME_DIR}/projects \ && mkdir -p ${HOME_DIR}/jobs ${HOME_DIR}/projects \
&& adduser -S docker -D && adduser -S docker -D
COPY docker-entrypoint / COPY docker-entrypoint /
ENTRYPOINT ["/docker-entrypoint"] ENTRYPOINT ["/sbin/tini", "--", "/docker-entrypoint"]
HEALTHCHECK --interval=5s --timeout=3s \ HEALTHCHECK --interval=5s --timeout=3s \
CMD ps aux | grep '[c]rond' || exit 1 CMD ps aux | grep '[c]rond' || exit 1

48
docker-entrypoint
View File

@ -15,20 +15,15 @@ if [ "${LOG_FILE}" == "" ]; then
touch ${LOG_FILE} touch ${LOG_FILE}
fi fi
get_config() {
if [ -f "${HOME_DIR}/config.toml" ]; then if [ -f "${HOME_DIR}/config.toml" ]; then
python3 -c "with open('${HOME_DIR}/config.toml') as ct, open('${HOME_DIR}/config.json', 'w') as cj: import toml; import json; json.dump(list(toml.load(ct).values()), cj)" python3 -c "with open('${HOME_DIR}/config.toml') as ct, open('${HOME_DIR}/config.json', 'w') as cj: import toml; import json; json.dump(list(toml.load(ct).values()), cj)"
elif [ -f "${HOME_DIR}/config.yml" ]; then elif [ -f "${HOME_DIR}/config.yml" ]; then
python3 -c "with open('${HOME_DIR}/config.yml') as cy, open('${HOME_DIR}/config.json', 'w') as cj: import yaml; import json; json.dump(list(yaml.safe_load(cy).values()), cj)" python3 -c "with open('${HOME_DIR}/config.yml') as cy, open('${HOME_DIR}/config.json', 'w') as cj: import yaml; import json; json.dump(list(yaml.safe_load(cy).values()), cj)"
elif [ -f "${HOME_DIR}/config.yaml" ]; then elif [ -f "${HOME_DIR}/config.yaml" ]; then
python3 -c "with open('${HOME_DIR}/config.yaml') as cy, open('${HOME_DIR}/config.json', 'w') as cj: import yaml; import json; json.dump(list(yaml.safe_load(cy).values()), cj)" python3 -c "with open('${HOME_DIR}/config.yaml') as cy, open('${HOME_DIR}/config.json', 'w') as cj: import yaml; import json; json.dump(list(yaml.safe_load(cy).values()), cj)"
fi fi
}
if [ -f "${HOME_DIR}/config.json" ]; then
CONFIG=${HOME_DIR}/config.json
else
echo "NO CONFIG FILE FOUND"
fi
DOCKER_SOCK=/var/run/docker.sock DOCKER_SOCK=/var/run/docker.sock
CRONTAB_FILE=/etc/crontabs/docker CRONTAB_FILE=/etc/crontabs/docker
@ -183,6 +178,7 @@ parse_schedule() {
} }
function build_crontab() { function build_crontab() {
rm -rf ${CRONTAB_FILE} rm -rf ${CRONTAB_FILE}
ONSTART=() ONSTART=()
@ -260,15 +256,25 @@ EOF
done done
} }
ensure_docker_socket_accessible ensure_docker_socket_accessible
if [ "$1" = "crond" ]; then start_app() {
if [ -f ${CONFIG} ]; then get_config
build_crontab if [ -f "${HOME_DIR}/config.json" ]; then
export CONFIG=${HOME_DIR}/config.json
else else
echo "Unable to find ${CONFIG}" echo "NO CONFIG FILE FOUND"
fi fi
fi if [ "$1" = "crond" ]; then
if [ -f ${CONFIG} ]; then
build_crontab
else
echo "Unable to find ${CONFIG}"
fi
fi
echo "$@"
exec "$@"
}
echo "$@" start_app "$@"
exec "$@"