Add Dockerfile to create an OCI image of agent

agent/extra/docker/Dockerfile

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+FROM ubuntu:22.04
+
+# normal settings
+ENV TZ=Asia/Taipei \
+    LANG=C.UTF-8 \
+    CONFIG_DIR=/tmp/config \
+    INFLUX_HOST=localhost \
+    INFLUX_PORT=8086 \
+    INFLUX_USER=testflinger-agent \
+    INFLUX_PW=testflinger-agent
+
+# device-connectors default config
+ENV DC_CONFIG=device-connectors.yaml \
+    DC_DUT_IP=127.0.0.1 \
+    DC_DUT_SID=aabbccdd \
+    DC_NODE_ID= \
+    DC_NODE_NAME=core-taipei-testflinger \
+    DC_AGENT_NAME=staging-tfagent-cid-REPLACE_TO_HOSTNAME \
+    DC_MASS_USER=bot \
+    DC_TIMEOUT=120
+
+# testflinger-agent default config
+ENV AGENT_CONFIG=agent.yaml \
+    AGENT_ID=${DC_AGENT_NAME} \
+    TESTFLINGER_SERVER=https://testflinger.canonical.com \
+    AGENT_TIMEOUT=43200 \
+    AGENT_OUTPUT_TIMEOUT=9000 \
+    AGENT_EXEC_DIR=/testflinger/run/ \
+    AGENT_LOG_DIR=/testflinger/log/ \
+    AGENT_RESULT_DIR=/testflinger/result/ \
+    AGENT_LOG_LEVEL=DEBUG \
+    AGENT_JOB_QUEUE=staging-job-cid-REPLACE_TO_HOSTNAME \
+    AGENT_SET_CMD=/bin/true \
+    AGENT_PROV_CMD=/bin/true \
+    AGENT_TEST_CMD="PYTHONIOENCODING=utf-8 PYTHONUNBUFFERED=1 testflinger-device-connector maas2 runtest -c ${CONFIG_DIR}/${DC_CONFIG} testflinger.json" \
+    AGENT_CLEAN_CMD=/bin/true
+
+
+# python
+ARG PYTHON=python3
+
+# preinstall packages
+RUN apt-get update && \
+    DEBIAN_FRONTEND=noninteractive \
+    apt-get -y install \
+               software-properties-common \
+               gpg \
+               ca-certificates \
+               curl \
+               git \
+               git-lfs \
+               netbase \
+               less \
+               openssh-client \
+               patch \
+               tzdata \
+               python3-pip \
+               python3-dev \
+               ssh-import-id \
+               jq \
+               sshpass \
+               build-essential && \
+     apt-get clean && \
+     rm -rf /tmp/* /var/cache/* /usr/share/doc/* /usr/share/man/* /var/lib/apt/lists/*
+
+# For security reason, the code below should run with non-root.
+# However, we have to install checkbox by apt command
+# from testflinger-agent itself to get more flexiblity.
+# Please use rootless mode to install Docker, nerdctl or podman.
+
+# install testflinger-agent testflinger-cli and device-connectors
+RUN git clone https://github.com/canonical/testflinger.git && \
+    cd testflinger && \
+    ${PYTHON} -m pip install pip -U && \
+    ${PYTHON} -m pip install -I agent/ && \
+    ${PYTHON} -m pip install -I device-connectors/ && \
+    ${PYTHON} -m pip install -I cli/ && \
+    rm -rf *
+
+# create agent working dir
+RUN mkdir -p ${AGENT_EXEC_DIR} ${AGENT_LOG_DIR} ${AGENT_RESULT_DIR} ${CONFIG_DIR}
+
+COPY --chmod=0111 agent.sh ./
+
+CMD ["./agent.sh"]

agent/extra/docker/README.md

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+**This image is for a specific use case and that most device connectors will not function properly this way, so it's not recommended for use in most cases.**
+
+# Description
+This Dockerfile is used to build an OCI image includes testflinger-agent, testflinger-cli, testfliger-device-connector inside.
+Testflinger-agent is the only application that running at beginning.
+
+# How to build
+```shell
+docker build -t [where is the images registry]/[image name]:[tag] .
+```
+
+# Variables
+There are some environment variables that could be used to change the setting:
+|Variable|description|default|
+|--|--|--|
+|CONFIG\_DIR|where the configuration files are|/tmp/config|
+|INFLUX\_HOST|for testflinger-agent|127.0.0.1|
+|INFLUX\_PORT|for testflinger-agent|8086|
+|INFLUX\_USER|for testflinger-agent|testflinger-agent|
+|INFLUX\_PW|for testflinger-agent|testflinger-agent|
+|DC\_CONFIG|configuration file of device-connector|device-connectors.yaml|
+|DC\_DUT\_IP|DUT IP that device-connector will operate|127.0.0.1|
+|DC\_DUT\_SID|secure id of DUT|aabbccdd|
+|DC\_NODE\_ID|where the device-connector running is||
+|DC\_NODE\_NAME|where the device-connector running is|staging-tfagent-cid-REPLACE\_TO\_HOSTNAME(This defualt value will replace `REPLACE_TO_HOSTNAME` to hostname. Therefore, you could use CID as the hostname while starting container)|
+|DC\_MASS\_USER|mass user|bot|
+|DC\_TIMEOUT|timeout of device-connector|120|
+|AGENT\_CONFIG|configuration file of testflinger-agent|agent.yaml|
+|AGENT\_ID|name of agent|same with `DC_AGENT_NAME`|
+|TESTFLINGER\_SERVER|where the testflinger server is|https://testflinger.canonical.com|
+|AGENT\_TIMEOUT|timeout of testflinger-agent|43200|
+|AGENT\_OUTPUT\_TIMEOUT| output timeout of testflinger-agent|9000|
+|AGENT\_EXEC\_DIR|where the testflinger-agent to store running info is|/testflinger/run/|
+|AGENT\_LOG\_DIR|where the testflinger-agent to store log info is|/testflinger/log/|
+|AGENT\_RESULT\_DIR|where the testflinger-agent to store result info is|/testflinger/result/|
+|AGENT\_LOG\_LEVEL|log level of testflinger-agent|DEBUG|
+|AGENT\_JOB\_QUEUE|the job queue the testflinger-agent listened|staging-job-cid-REPLACE\_TO\_HOSTNAME(This defualt value will replace `REPLACE_TO_HOSTNAME` to hostname. Therefore, you could use CID as the hostname while starting container)|
+|AGENT\_SET\_CMD|set command of testflinger-agent|/bin/true|
+|AGENT\_PROV\_CMD|provision command of testflinger-agent|/bin/true|
+|AGENT\_CLEAN\_CMD|cleanup command of testflinger-agent|/bin/true|
+|AGENT\_TEST\_CMD|test command of testflinger-agent|PYTHONIOENCODING=utf-8 PYTHONUNBUFFERED=1 testflinger-device-connector maas2 runtest -c ${CONFIG\_DIR}/${DC\_CONFIG} testflinger.json|
+
+# How to start this container
+```shell
+docker run -d --rm -e INFLUX_HOST=[where it is] --hostname [CID] [images name]
+```
+
+The user in this conatiner is `root`, you don't have to add `sudo` before the command while root-privilege being needed. For security reason, this container should be ran by `rootless` container runtime.
+
+# How to put configuration file into this container
+The start script will check the configuration files are under `CONFIG_DIR` or not, you could mount volume that contain the configuration files to use your own setting without using too much environment varialbs.
+

agent/extra/docker/agent.sh

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+#!/bin/bash
+
+# if no testflinger-agent configuration create one
+if [ ! -f "${CONFIG_DIR}/${AGENT_CONFIG}" ]; then
+cat <<EOF >"${CONFIG_DIR}/${AGENT_CONFIG}"
+agent_id: ${AGENT_ID}
+server_address: ${TESTFLINGER_SERVER}
+global_timeout: ${AGENT_TIMEOUT}
+output_timeout: ${AGENT_OUTPUT_TIMEOUT}
+execution_basedir: ${AGENT_EXEC_DIR}
+logging_basedir: ${AGENT_LOG_DIR}
+results_basedir: ${AGENT_RESULT_DIR}
+logging_level: ${AGENT_LOG_LEVEL}
+job_queues:
+   - ${AGENT_JOB_QUEUE}
+setup_command: ${AGENT_SET_CMD}
+provision_command: ${AGENT_PROV_CMD}
+test_command: ${AGENT_TEST_CMD}
+cleanup_command: ${AGENT_CLEAN_CMD}
+EOF
+fi
+
+# if no device-connectors configuration create one
+if [ ! -f "${CONFIG_DIR}/${DC_CONFIG}" ]; then
+cat <<EOF >"${CONFIG_DIR}/${DC_CONFIG}"
+device_ip: ${DC_DUT_IP}
+secure_id: ${DC_DUT_SID}
+node_id: ${DC_NODE_ID}
+node_name: ${DC_NODE_NAME}
+agent_name: ${DC_AGENT_NAME}
+maas_user: ${DC_MASS_USER}
+timeout_min: ${DC_TIMEOUT}
+env:
+    HEXR_DEVICE_SECURE_ID: ${DC_DUT_SID}
+    DEVICE_IP: ${DC_DUT_IP}
+EOF
+fi
+
+# show usage
+testflinger-agent -h
+testflinger-cli -h
+testflinger-device-connector -h
+
+# replace placeholder "REPLACE_TO_HOSTNAME" to ${HOSTNAME}
+sed -i s/REPLACE_TO_HOSTNAME/"${HOSTNAME}"/g "${CONFIG_DIR}/${AGENT_CONFIG}"
+sed -i s/REPLACE_TO_HOSTNAME/"${HOSTNAME}"/g "${CONFIG_DIR}/${DC_CONFIG}"
+
+# show agent information
+echo "$(grep agent_id ${CONFIG_DIR}/${AGENT_CONFIG})" 
+echo "$(grep -A 1 job_queues ${CONFIG_DIR}/${AGENT_CONFIG})"
+
+# start testflinger-agent
+if [ -z "${NO_AGENT_LOG}" ] ;then
+    testflinger-agent -c "${CONFIG_DIR}/${AGENT_CONFIG}"
+else
+    testflinger-agent -c "${CONFIG_DIR}/${AGENT_CONFIG}" > /dev/null 2>&1
+fi