Clean Docker Images and Container by Cron Job

1.Cretae a clean_docker_containers.sh to clean containers (status: exited, dead) 

#!/bin/bash# 找到所有状态不正常的容器
containers=$(docker ps -a --filter "status=exited" --filter "status=dead" --format "{{.ID}}")if [ -z "$containers" ]; thenecho "No containers to clean."
elseecho "Cleaning up the following containers:"echo "$containers"echofor container in $containers; doecho "Deleting container $container"docker rm -f $containerdone
fi# 设置 Cron Job：crontab -e

2. Create a delete_docker_images.sh to delete images with keyword.

#!/bin/bash# 检查是否提供了关键词参数
if [ "$#" -ne 1 ]; thenecho "Usage: $0 <keyword>"exit 1
fi# 关键词参数
KEYWORD=$1# 找到所有包含关键词的镜像
images=$(docker images --format "{{.Repository}}:{{.Tag}}" | grep ${KEYWORD})if [ -z "$images" ]; thenecho "No images found with keyword: ${KEYWORD}"
elseecho "Images to be deleted:"echo "$images"echofor image in $images; doecho "Deleting image $image"docker rmi -f $imagedone
fi

3. Create a run_clean_docker.sh to run these shell command as above.

#!/bin/bash# SET PATH
cd /your-parth/Docker# 定义日志文件
LOGFILE="./cron.log"# 记录时间和作者
echo "[$(date '+%Y-%m-%d %H:%M:%S')] Delete Docker Images and Container Script executed" >> ${LOGFILE}# 运行原先的脚本，并将输出写入日志
./delete_docker_images.sh /your-keyword/ >> ${LOGFILE} 2>&1
./clean_docker_containers.sh >> ${LOGFILE} 2>&1echo "[$(date '+%Y-%m-%d %H:%M:%S')] End" >> ${LOGFILE}
echo "" >> ${LOGFILE}

4. Set a cron job

4.1 crontab -e

# 第一颗星表示分钟（0-59）第二颗星表示小时（0-23）第三颗星表示一个月中的天（1-31）
# 第四颗星表示月份（1-12）第五颗星表示一周中的天（0-7，星期天可以是0或7）
# 每天8時定期清理 docker images by keyword & container
0 8 * * * /your-path/Docker/run_clean_docker.sh

 4.2 cron.log

[2024-11-28 08:00:01] Delete Docker Images and Container Script executed
No images found with keyword: /ccs/
No containers to clean.
[2024-11-28 08:00:01] End