act_runner/run.sh
Thomas E Lackey 5a8134410d Run as a container (#8) including Docker-in-Docker. (#84)
This adds a very simple Dockerfile and run script for running `act_runner` as a container.

It also allows setting `Privileged` and `ContainerOptions` flags via the new config file when spawning task containers.  The combination makes it possible to use Docker-in-Docker (which requires `privileged` mode) as well as pass any other options child Docker containers may require.

For example, if Gitea is running in Docker on the same machine, for the `checkout` action to behave as expected from a task container launched by `act_runner`, it might be necessary to map the hostname via something like:

```
container:
  network_mode: bridge
  privileged: true
  options: --add-host=my.gitea.hostname:host-gateway
```

> NOTE: Description updated to reflect latest code.
> NOTE: Description updated to reflect latest code (again).

Reviewed-on: https://gitea.com/gitea/act_runner/pulls/84
Reviewed-by: Lunny Xiao <xiaolunwen@gmail.com>
Reviewed-by: Jason Song <i@wolfogre.com>
Co-authored-by: Thomas E Lackey <telackey@bozemanpass.com>
Co-committed-by: Thomas E Lackey <telackey@bozemanpass.com>
2023-04-11 10:58:12 +08:00

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#!/usr/bin/env bash
if [[ ! -d /data ]]; then
mkdir -p /data
fi
cd /data
CONFIG_ARG=""
if [[ ! -z "${CONFIG_FILE}" ]]; then
CONFIG_ARG="--config ${CONFIG_FILE}"
fi
# Use the same ENV variable names as https://github.com/vegardit/docker-gitea-act-runner
if [[ ! -s .runner ]]; then
try=$((try + 1))
success=0
# The point of this loop is to make it simple, when running both act_runner and gitea in docker,
# for the act_runner to wait a moment for gitea to become available before erroring out. Within
# the context of a single docker-compose, something similar could be done via healthchecks, but
# this is more flexible.
while [[ $success -eq 0 ]] && [[ $try -lt ${GITEA_MAX_REG_ATTEMPTS:-10} ]]; do
act_runner register \
--instance "${GITEA_INSTANCE_URL}" \
--token "${GITEA_RUNNER_REGISTRATION_TOKEN}" \
--name "${GITEA_RUNNER_NAME:-`hostname`}" \
--labels "${GITEA_RUNNER_LABELS}" \
${CONFIG_ARG} --no-interactive > /tmp/reg.log 2>&1
cat /tmp/reg.log
cat /tmp/reg.log | grep 'Runner registered successfully' > /dev/null
if [[ $? -eq 0 ]]; then
echo "SUCCESS"
success=1
else
echo "Waiting to retry ..."
sleep 5
fi
done
fi
act_runner daemon ${CONFIG_ARG}