我回答的前提是:

容器使用标签运行。 相同的标签可以指向不同的图像UUID，因为我们喜欢/觉得合适。 对图像的更新可以提交到新的图像层

方法

首先使用安全补丁更新脚本构建所有容器 为以下内容构建一个自动化流程 使用安全补丁脚本将现有映像运行到新容器 提交对映像的更改为 现有标记->，然后逐个重新启动容器 新版本标签->用新标签替换少数容器->验证->将所有容器移动到新标签

此外，可以升级基本映像/可以定期构建具有完整的新基本映像的容器，这是维护者认为必要的

优势

我们在创建新的安全补丁映像时保留映像的旧版本，因此如果需要，我们可以回滚到以前正在运行的映像 我们保留了docker缓存，从而减少了网络传输(只有被更改的层连接到网络上) 升级过程可以在过渡到产品化之前在阶段中进行验证 这可以是一个受控的过程，因此只有在必要/被认为重要时才可以推送安全补丁。

你试过这个吗:https://github.com/v2tec/watchtower。 它是一个简单的工具，运行在docker容器中，监视其他容器，如果它们的基本映像改变了，它将拉出并重新部署。

一种“docker方式”是使用docker hub自动构建。当上游容器被重建时，Repository Links特性将重建你的容器，Webhooks特性将向你发送通知。

看起来webhooks仅限于HTTP POST调用。您需要设置一个服务来捕获它们，或者可能使用其中一个POST发送电子邮件服务。

我还没有深入研究，但是新的Docker通用控制平面可能有一个检测更新容器和重新部署的功能。

你不会知道你的集装箱在后面没有运行码头拉。然后，您需要重新构建或重组您的映像。

docker pull image:tag
docker-compose -f docker-compose.yml -f production.yml up -d --build

这些命令可以与完成升级所需的任何其他东西一起放在脚本中，尽管一个合适的容器不需要任何额外的东西。

以上答案也是正确的

有两种方法

使用的人 每隔一分钟运行脚本以获取新的docker映像

我只是分享脚本，可能会对你有帮助! 你可以用cronjob，我在OSX上成功尝试过

#!/bin/bash
##You can use below commented line for setting cron tab for running cron job and to store its O/P in one .txt file  
#* * * * * /usr/bin/sudo -u admin -i bash -c /Users/Swapnil/Documents/checkimg.sh > /Users/Swapnil/Documents/cron_output.log 2>&1
# Example for the Docker Hub V2 API
# Returns all images and tags associated with a Docker Hub organization account.
# Requires 'jq': https://stedolan.github.io/jq/

# set username, password, and organization
# Filepath where your docker-compose file is present
FILEPATH="/Users/Swapnil/Documents/lamp-alpine"
# Your Docker hub user name
UNAME="ur username"
# Your Docker hub user password
UPASS="ur pwd"
# e.g organisation_name/image_name:image_tag
ORG="ur org name"
IMGNAME="ur img name"
IMGTAG="ur img tag"
# Container name
CONTNAME="ur container name"
# Expected built mins
BUILDMINS="5"
#Generally cronjob frequency
CHECKTIME="5"
NETWORKNAME="${IMGNAME}_private-network"
#After Image pulling, need to bring up all docker services?
DO_DOCKER_COMPOSE_UP=true
# -------
echo "Eecuting Script @ date and time in YmdHMS: $(date +%Y%m%d%H%M%S)"
set -e
PIDFILE=/Users/Swapnil/Documents/$IMGNAME/forever.pid
if [ -f $PIDFILE ]
then
  PID=$(cat $PIDFILE)
  ps -p $PID > /dev/null 2>&1
  if [ $? -eq 0 ]
  then
    echo "Process already running"
    exit 1
  else
    ## Process not found assume not running
    echo $$
    echo $$ > $PIDFILE
    if [ $? -ne 0 ]
    then
      echo "Could not create PID file"
      exit 1
    fi
  fi
else
  echo $$ > $PIDFILE
  if [ $? -ne 0 ]
  then
    echo "Could not create PID file"
    exit 1
  fi
fi

# Check Docker is running or not; If not runing then exit
if docker info|grep Containers ; then
    echo "Docker is running"
else
    echo "Docker is not running"
    rm $PIDFILE
    exit 1
fi

# Check Container is running or not; and set variable
CONT_INFO=$(docker ps -f "name=$CONTNAME" --format "{{.Names}}")
if [ "$CONT_INFO" = "$CONTNAME" ]; then
    echo "Container is running"
    IS_CONTAINER_RUNNING=true
else
    echo "Container is not running"
    IS_CONTAINER_RUNNING=false
fi


# get token
echo "Retrieving token ..."
TOKEN=$(curl -s -H "Content-Type: application/json" -X POST -d '{"username": "'${UNAME}'", "password": "'${UPASS}'"}' https://hub.docker.com/v2/users/login/ | jq -r .token)

# get list of repositories
echo "Retrieving repository list ..."
REPO_LIST=$(curl -s -H "Authorization: JWT ${TOKEN}" https://hub.docker.com/v2/repositories/${ORG}/?page_size=100 | jq -r '.results|.[]|.name')

# output images & tags
echo "Images and tags for organization: ${ORG}"
echo
for i in ${REPO_LIST}
do
  echo "${i}:"
  # tags
  IMAGE_TAGS=$(curl -s -H "Authorization: JWT ${TOKEN}" https://hub.docker.com/v2/repositories/${ORG}/${i}/tags/?page_size=100 | jq -r '.results|.[]|.name')
  for j in ${IMAGE_TAGS}
  do
    echo "  - ${j}"
  done
  #echo
done

# Check Perticular image is the latest or not
#imm=$(curl -s -H "Authorization: JWT ${TOKEN}" https://hub.docker.com/v2/repositories/${ORG}/${IMGNAME}/tags/?page_size=100)
echo "-----------------"
echo "Last built date details about Image ${IMGNAME} : ${IMGTAG} for organization: ${ORG}"
IMAGE_UPDATED_DATE=$(curl -s -H "Authorization: JWT ${TOKEN}" https://hub.docker.com/v2/repositories/${ORG}/${IMGNAME}/tags/?page_size=100 | jq -r '.results|.[]|select(.name | contains("'${IMGTAG}'")).last_updated')
echo "On Docker Hub IMAGE_UPDATED_DATE---$IMAGE_UPDATED_DATE"
echo "-----------------"

IMAGE_CREATED_DATE=$(docker image inspect ${ORG}/${IMGNAME}:${IMGTAG} | jq -r '.[]|.Created')
echo "Locally IMAGE_CREATED_DATE---$IMAGE_CREATED_DATE"

updatedDate=$(date -jf '%Y-%m-%dT%H:%M' "${IMAGE_UPDATED_DATE:0:16}" +%Y%m%d%H%M%S) 
createdDate=$(date -jf '%Y-%m-%dT%H:%M' "${IMAGE_CREATED_DATE:0:16}" +%Y%m%d%H%M%S)
currentDate=$(date +%Y%m%d%H%M%S)

start_date=$(date -jf "%Y%m%d%H%M%S" "$currentDate" "+%s")
end_date=$(date -jf "%Y%m%d%H%M%S" "$updatedDate" "+%s")
updiffMins=$(( ($start_date - $end_date) / (60) ))
if [[ "$updiffMins" -lt $(($CHECKTIME+1)) ]]; then
        if [ ! -d "${FILEPATH}" ]; then
            mkdir "${FILEPATH}";
        fi
        cd "${FILEPATH}"
        pwd
        echo "updatedDate---$updatedDate" > "ScriptOutput_${currentDate}.txt"
        echo "createdDate---$createdDate" >> "ScriptOutput_${currentDate}.txt"
        echo "currentDate---$currentDate" >> "ScriptOutput_${currentDate}.txt"
        echo "Found after regular checking time -> Docker hub's latest updated image is new; Diff ${updiffMins} mins" >> "ScriptOutput_${currentDate}.txt"
        echo "Script is checking for latest updates after every ${CHECKTIME} mins" >> "ScriptOutput_${currentDate}.txt"
        echo "Fetching all new"
        echo "---------------------------"
        if $IS_CONTAINER_RUNNING ; then
            echo "Container is running"         
        else
            docker-compose down
            echo "Container stopped and removed; Network removed" >> "ScriptOutput_${currentDate}.txt"
        fi
        echo "Image_Created_Date=$currentDate" > ".env"
        echo "ORG=$ORG" >> ".env"
        echo "IMGNAME=$IMGNAME" >> ".env"
        echo "IMGTAG=$IMGTAG" >> ".env"
        echo "CONTNAME=$CONTNAME" >> ".env"
        echo "NETWORKNAME=$NETWORKNAME" >> ".env"
        docker-compose build --no-cache
        echo "Docker Compose built" >> "ScriptOutput_${currentDate}.txt"
        if $DO_DOCKER_COMPOSE_UP ; then
            docker-compose up -d
            echo "Docker services are up now, checked in" >> "ScriptOutput_${currentDate}.txt"  
        else
            echo "Docker services are down, checked in" >> "ScriptOutput_${currentDate}.txt"
        fi
elif [[ "$updatedDate" -gt "$createdDate" ]]; then 
    echo "Updated is latest"
    start_date=$(date -jf "%Y%m%d%H%M%S" "$updatedDate" "+%s")
    end_date=$(date -jf "%Y%m%d%H%M%S" "$createdDate" "+%s")
    diffMins=$(( ($start_date - $end_date) / (60) ))
    if [[ "$BUILDMINS" -lt "$diffMins" ]]; then
        if [ ! -d "${FILEPATH}" ]; then
            mkdir "${FILEPATH}";
        fi
        cd "${FILEPATH}"
        pwd
        echo "updatedDate---$updatedDate" > "ScriptOutput_${currentDate}.txt"
        echo "createdDate---$createdDate" >> "ScriptOutput_${currentDate}.txt"
        echo "currentDate---$currentDate" >> "ScriptOutput_${currentDate}.txt"
        echo "Found after comparing times -> Docker hub's latest updated image is new; Diff ${diffMins} mins" >> "ScriptOutput_${currentDate}.txt"
        echo "Actual image built time is less i.e. ${diffMins} mins than MAX expexted BUILD TIME i.e. ${BUILDMINS} mins" >> "ScriptOutput_${currentDate}.txt"
        echo "Fetching all new" >> "ScriptOutput_${currentDate}.txt"
        echo "-----------------------------"
        if $IS_CONTAINER_RUNNING ; then
            echo "Container is running"         
        else
            docker-compose down
            echo "Container stopped and removed; Network removed" >> "ScriptOutput_${currentDate}.txt"
        fi
        echo "Image_Created_Date=$currentDate" > ".env"
        echo "ORG=$ORG" >> ".env"
        echo "IMGNAME=$IMGNAME" >> ".env"
        echo "IMGTAG=$IMGTAG" >> ".env"
        echo "CONTNAME=$CONTNAME" >> ".env"
        echo "NETWORKNAME=$NETWORKNAME" >> ".env"
        docker-compose build --no-cache
        echo "Docker Compose built" >> "ScriptOutput_${currentDate}.txt"
        if $DO_DOCKER_COMPOSE_UP ; then
            docker-compose up -d
            echo "Docker services are up now" >> "ScriptOutput_${currentDate}.txt"  
        else
            echo "Docker services are down" >> "ScriptOutput_${currentDate}.txt"
        fi
    elif [[ "$BUILDMINS" -gt "$diffMins" ]]; then
        echo "Docker hub's latest updated image is NOT new; Diff ${diffMins} mins"
        echo "Docker images not fetched"
    else
        echo "Docker hub's latest updated image is NOT new; Diff ${diffMins} mins"
        echo "Docker images not fetched"
    fi
elif [[ "$createdDate" -gt "$updatedDate" ]]; then 
    echo "Created is latest"
    start_date=$(date -jf "%Y%m%d%H%M%S" "$createdDate" "+%s")
    end_date=$(date -jf "%Y%m%d%H%M%S" "$updatedDate" "+%s")
    echo "Docker hub has older docker image than local; Older than $(( ($start_date - $end_date) / (60) ))mins"
fi
echo 
echo "------------end---------------"
rm $PIDFILE

这是我的docker-compose文件

version:  "3.2"
services:
  lamp-alpine:
    build:
      context: .
    container_name: "${CONTNAME}"
    image: "${ORG}/${IMGNAME}:${IMGTAG}"
    ports:
      - "127.0.0.1:80:80"
    networks:
      - private-network 

networks:
  private-network:
    driver: bridge

我也遇到过同样的问题，我认为可以通过cron作业每天调用无人值机升级来简单解决。

我的意图是将其作为一种自动和快速的解决方案，以确保生产容器是安全和更新的，因为更新映像和部署具有最新安全更新的新docker映像需要花费一些时间。

也可以使用Github钩子自动化映像的构建和部署

我已经创建了一个基本的docker映像，每天自动检查和安装安全更新(可以通过docker run itech/docker- unattentedupgrade直接运行)。

我还发现了另一种检查容器是否需要更新的方法。

我的完整实现:

Dockerfile

FROM ubuntu:14.04   

RUN apt-get update \
&& apt-get install -y supervisor unattended-upgrades \
&& rm -rf /var/lib/apt/lists/*

COPY install /install
RUN chmod 755 install
RUN /install

COPY start /start
RUN chmod 755 /start

辅助脚本

安装

#!/bin/bash
set -e

cat > /etc/supervisor/conf.d/cron.conf <<EOF
[program:cron]
priority=20
directory=/tmp
command=/usr/sbin/cron -f
user=root
autostart=true
autorestart=true
stdout_logfile=/var/log/supervisor/%(program_name)s.log
stderr_logfile=/var/log/supervisor/%(program_name)s.log
EOF

rm -rf /var/lib/apt/lists/*

ENTRYPOINT ["/start"]

开始

#!/bin/bash

set -e

echo "Adding crontab for unattended-upgrade ..."
echo "0 0 * * * root /usr/bin/unattended-upgrade" >> /etc/crontab

# can also use @daily syntax or use /etc/cron.daily

echo "Starting supervisord ..."
exec /usr/bin/supervisord -n -c /etc/supervisor/supervisord.conf

Edit

我开发了一个小工具docker-run，它作为docker容器运行，可以用来更新所有或选定的运行容器中的包，它也可以用来运行任何任意命令。

可以使用以下命令轻松测试:

Docker run——rm -v /var/run/ Docker .sock:/tmp/ Docker .sockSock itech/docker-run exec

默认情况下，它将在所有运行的容器中执行date命令并显示结果。如果你传递update而不是exec，它将在所有运行的容器中执行apt-get update和apt-get upgrade -y