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feat: add support for non-web healthchecks via app.json

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This change converts existing CHECKS files into a healthchecks key that is understood by 'docker-container-healthchecker'. This tool supports a number of different types of container healthchecks - command, http, uptime - and can perform healthchecks against non-web processes.

The use of the old CHECKS file is now deprecated, and will be removed in the next minor version. Users can use the 'docker-container-healthchecker' to convert existing CHECKS files to the new format automatically.

Closes #2760
This commit is contained in:
Jose Diaz-Gonzalez
2023-08-05 12:28:11 -04:00
parent 6f0b32e86b
commit 26e9cc9b8c
16 changed files with 171 additions and 384 deletions
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2
docker/etc/sudoers.d/dokku-docker
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@@ -1 +1 @@
dokku ALL=NOPASSWD:SETENV:/usr/bin/docker,/usr/bin/docker-image-labeler,/usr/bin/pack,/usr/bin/crontab
dokku ALL=NOPASSWD:SETENV:/usr/bin/docker,/usr/bin/docker-container-healthchecker,/usr/bin/docker-image-labeler,/usr/bin/pack,/usr/bin/crontab

20
docker/usr/local/bin/docker-container-healthchecker Executable file
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@@ -0,0 +1,20 @@
#!/usr/bin/env bash
set -eo pipefail
[[ $TRACE ]] && set -x
main() {
declare desc="re-runs docker-container-healthchecker commands as sudo"
local DOCKER_CONTAINER_HEALTHCHECKER_BIN=""
if [[ -x "/usr/bin/docker-container-healthchecker" ]]; then
DOCKER_CONTAINER_HEALTHCHECKER_BIN="/usr/bin/docker-container-healthchecker"
fi
if [[ -z "$DOCKER_CONTAINER_HEALTHCHECKER_BIN" ]]; then
echo "! No docker-container-healthchecker binary found" 1>&2
exit 1
fi
sudo -E "$DOCKER_CONTAINER_HEALTHCHECKER_BIN" "$@"
}
main "$@"