我们使用一个脚本来检查正在运行的容器是否以最新映像启动。我们还使用upstart init脚本来启动docker映像。

    #!/usr/bin/env bash
    set -e
    BASE_IMAGE="registry"
    REGISTRY="registry.hub.docker.com"
    IMAGE="$REGISTRY/$BASE_IMAGE"
    CID=$(docker ps | grep $IMAGE | awk '{print $1}')
    docker pull $IMAGE

    for im in $CID
    do
        LATEST=`docker inspect --format "{{.Id}}" $IMAGE`
        RUNNING=`docker inspect --format "{{.Image}}" $im`
        NAME=`docker inspect --format '{{.Name}}' $im | sed "s/\///g"`
        echo "Latest:" $LATEST
        echo "Running:" $RUNNING
        if [ "$RUNNING" != "$LATEST" ];then
            echo "upgrading $NAME"
            stop docker-$NAME
            docker rm -f $NAME
            start docker-$NAME
        else
            echo "$NAME up to date"
        fi
    done

init看起来像这样

docker run -t -i --name $NAME $im /bin/bash

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。

更新:使用Dependabot - https://dependabot.com/docker/

BLUF:找到正确的插入点来监视容器的更改是一个挑战。如果DockerHub能解决这个问题，那就太好了。(存储库链接已经提到过，但注意在DockerHub上设置它们时-“每当在DockerHub上更新基本映像时，都会在此存储库中触发一个构建。只适用于非官方图片。”)

当我自己尝试解决这个问题时，我看到了几个webhook的建议，所以我想详细说明我使用过的几个解决方案。

Use microbadger.com to track changes in a container and use it's notification webhook feature to trigger an action. I set this up with zapier.com (but you can use any customizable webhook service) to create a new issue in my github repository that uses Alpine as a base image. Pros: You can review the changes reported by microbadger in github before taking action. Cons: Microbadger doesn't let you track a specific tag. Looks like it only tracks 'latest'. Track the RSS feed for git commits to an upstream container. ex. https://github.com/gliderlabs/docker-alpine/commits/rootfs/library-3.8/x86_64. I used zapier.com to monitor this feed and to trigger an automatic build of my container in Travis-CI anytime something is committed. This is a little extreme but you can change the trigger to do other things like open an issue in your git repository for manual intervention. Pros: Closer to an automated pipline. The Travis-CI build just checks to see if your container has issues with whatever was committed to the base image repository. It's up to you if your CI service takes any further action. Cons: Tracking the commit feed isn't perfect. Lots of things get committed to the repository that don't affect the build of the base image. Doesn't take in to account any issues with frequency/number of commits and any API throttling.

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

我不打算讨论您是否希望在生产中进行无人值守的更新(我认为不需要)。我只是把这个留在这里作为参考，以防有人觉得有用。在终端中使用以下命令将所有docker映像更新到最新版本:

# docker images | awk '(NR>1) && ($2!~/none/) {print $1":"$2}' | xargs -L1 docker pull

我们使用一个脚本来检查正在运行的容器是否以最新映像启动。我们还使用upstart init脚本来启动docker映像。

    #!/usr/bin/env bash
    set -e
    BASE_IMAGE="registry"
    REGISTRY="registry.hub.docker.com"
    IMAGE="$REGISTRY/$BASE_IMAGE"
    CID=$(docker ps | grep $IMAGE | awk '{print $1}')
    docker pull $IMAGE

    for im in $CID
    do
        LATEST=`docker inspect --format "{{.Id}}" $IMAGE`
        RUNNING=`docker inspect --format "{{.Image}}" $im`
        NAME=`docker inspect --format '{{.Name}}' $im | sed "s/\///g"`
        echo "Latest:" $LATEST
        echo "Running:" $RUNNING
        if [ "$RUNNING" != "$LATEST" ];then
            echo "upgrading $NAME"
            stop docker-$NAME
            docker rm -f $NAME
            start docker-$NAME
        else
            echo "$NAME up to date"
        fi
    done

init看起来像这样

docker run -t -i --name $NAME $im /bin/bash