是否可以将Docker配置为输出构建Dockerfile的时间？
我们运营一个中等规模的开发团队,并希望收集开发人员开发容器的平均构建时间统计信息.
理想情况下,它应该衡量各个步骤的持续时间.
BuildKit于18.06开始实验,通常在18.09年可用,内置了此功能.要使用实验模式配置dockerd守护程序,可以设置daemon.json:
$ cat /etc/docker/daemon.json
{
"experimental": true
}
然后,您可以使用环境变量从客户端启用BuildKit:
$ export DOCKER_BUILDKIT=1 $ docker build -t java-test:latest . [+] Building 421.6s (13/13) FINISHED => local://context (.dockerignore) 1.6s => => transferring context: 56B 0.3s => local://dockerfile (Dockerfile) 2.0s => => transferring dockerfile: 895B 0.4s => CACHED docker-image://docker.io/tonistiigi/copy:v0.1.3@sha256:e57a3b4d6240f55bac26b655d2cfb751f8b9412d6f 0.1s => docker-image://docker.io/library/openjdk:8-jdk-alpine 1.0s => => resolve docker.io/library/openjdk:8-jdk-alpine 0.0s => local://context 1.7s => => transferring context: 6.20kB 0.4s => docker-image://docker.io/library/openjdk:8-jre-alpine 1.3s => => resolve docker.io/library/openjdk:8-jre-alpine 0.0s => /bin/sh -c apk add --no-cache maven 61.0s => copy /src-0/pom.xml java/pom.xml 1.3s => /bin/sh -c mvn dependency:go-offline 339.4s => copy /src-0 java 0.9s => /bin/sh -c mvn package -Dmaven.test.skip=true 10.2s => copy /src-0/gs-spring-boot-docker-0.1.0.jar java/app.jar 0.8s => exporting to image 1.2s => => exporting layers 1.0s => => writing image sha256:d57028743ca10bb4d0527a294d5c83dd941aeb1033d4fe08949a135677846179 0.1s => => naming to docker.io/library/java-test:latest 0.1s
还有一个选项可以禁用tty控制台输出,该输出生成更适合脚本的输出,每个部分都有一个开始,停止和持续时间:
$ docker build -t java-test:latest --progress plain . #1 local://dockerfile (Dockerfile) #1 digest: sha256:da721b637ea85add6e26070a48520675cefc2bed947c626f392be9890236d11b #1 name: "local://dockerfile (Dockerfile)" #1 started: 2018-09-05 19:30:53.899809093 +0000 UTC #1 completed: 2018-09-05 19:30:53.899903348 +0000 UTC #1 duration: 94.255µs #1 started: 2018-09-05 19:30:53.900069076 +0000 UTC #1 transferring dockerfile: 38B done #2 ... #2 local://context (.dockerignore) #2 digest: sha256:cbf55954659905f4d7bd2fc3e5e52d566055eecd94fd7503565315022d834c21 #2 name: "local://context (.dockerignore)" #2 started: 2018-09-05 19:30:53.899624016 +0000 UTC #2 completed: 2018-09-05 19:30:53.899695455 +0000 UTC #2 duration: 71.439µs #2 started: 2018-09-05 19:30:53.899839335 +0000 UTC #2 completed: 2018-09-05 19:30:54.359527504 +0000 UTC #2 duration: 459.688169ms #2 transferring context: 34B done #1 local://dockerfile (Dockerfile) #1 completed: 2018-09-05 19:30:54.592304408 +0000 UTC #1 duration: 692.235332ms #3 docker-image://docker.io/tonistiigi/copy:v0.1.3@sha256:e57a3b4d6240f55ba... #3 digest: sha256:39386c91e9f27ee70b2eefdee12fc8a029bf5edac621b91eb5f3e6001d41dd4f #3 name: "docker-image://docker.io/tonistiigi/copy:v0.1.3@sha256:e57a3b4d6240f55bac26b655d2cfb751f8b9412d6f7bb1f787e946391fb4b21b" #3 started: 2018-09-05 19:30:54.731749377 +0000 UTC #3 completed: 2018-09-05 19:30:54.732013326 +0000 UTC #3 duration: 263.949µs #5 docker-image://docker.io/library/openjdk:8-jdk-alpine #5 digest: sha256:d680c6a82813d080081fbc3c024d21ddfa7ff995981cc7b4bfafe55edf80a319 #5 name: "docker-image://docker.io/library/openjdk:8-jdk-alpine" #5 started: 2018-09-05 19:30:54.731483638 +0000 UTC #5 completed: 2018-09-05 19:30:54.732480345 +0000 UTC #5 duration: 996.707µs #4 docker-image://docker.io/library/openjdk:8-jre-alpine #4 digest: sha256:9ed31df4e6731a1718ea93bfa77354ad1ea2d1625c1cb16e2087d16d0b84bd00 #4 name: "docker-image://docker.io/library/openjdk:8-jre-alpine" #4 started: 2018-09-05 19:30:54.73176516 +0000 UTC #4 completed: 2018-09-05 19:30:54.732603067 +0000 UTC #4 duration: 837.907µs #7 local://context #7 digest: sha256:efe765161a29e2bf7a41439cd2e6656fcf6fa6bc97da825ac9b5a0d8adecf1ac #7 name: "local://context" #7 started: 2018-09-05 19:30:54.73178732 +0000 UTC #7 completed: 2018-09-05 19:30:54.731880943 +0000 UTC #7 duration: 93.623µs #7 started: 2018-09-05 19:30:54.792740019 +0000 UTC #7 transferring context: 473B done #7 completed: 2018-09-05 19:30:55.059008345 +0000 UTC #7 duration: 266.268326ms #9 /bin/sh -c mvn dependency:go-offline #9 digest: sha256:2197672cd7a44d93e0dba40aa00d7ef41f8680226d91f469d1c925646bdc8d6d #9 name: "/bin/sh -c mvn dependency:go-offline" #9 started: 2018-09-05 19:30:55.203449147 +0000 UTC #9 completed: 2018-09-05 19:30:55.203449147 +0000 UTC #9 duration: 0s #9 cached: true #10 copy /src-0 java #10 digest: sha256:36cf252c34be098731bd8c5fb3f273f9c1437a5f74a65a3555d71150c2092fa7 #10 name: "copy /src-0 java" #10 started: 2018-09-05 19:30:55.203449147 +0000 UTC #10 completed: 2018-09-05 19:30:55.203449147 +0000 UTC #10 duration: 0s #10 cached: true #11 /bin/sh -c mvn package -Dmaven.test.skip=true #11 digest: sha256:390464b1fdc7a4c833b3476033d95b7714e22bcbfd018469e97b04781cb41532 #11 name: "/bin/sh -c mvn package -Dmaven.test.skip=true" #11 started: 2018-09-05 19:30:55.203449147 +0000 UTC #11 completed: 2018-09-05 19:30:55.203449147 +0000 UTC #11 duration: 0s #11 cached: true #12 copy /src-0/gs-spring-boot-docker-0.1.0.jar java/app.jar #12 digest: sha256:a7d60191a720f80de72a77ebe0d4bd1b0fd55d44e623661e80916b7fd1952076 #12 name: "copy /src-0/gs-spring-boot-docker-0.1.0.jar java/app.jar" #12 started: 2018-09-05 19:30:55.203449147 +0000 UTC #12 completed: 2018-09-05 19:30:55.203555216 +0000 UTC #12 duration: 106.069µs #12 cached: true #6 /bin/sh -c apk add --no-cache maven #6 digest: sha256:db505db5e418f195c7bad3a710ad40bec3d91d47ff11a6f464b3ae37af744e7d #6 name: "/bin/sh -c apk add --no-cache maven" #6 started: 2018-09-05 19:30:55.203449147 +0000 UTC #6 completed: 2018-09-05 19:30:55.203449147 +0000 UTC #6 duration: 0s #6 cached: true #8 copy /src-0/pom.xml java/pom.xml #8 digest: sha256:f032d4ff111c6ab0efef1a4e37d2467fffe43f48a529b8d56291ec81f96296ab #8 name: "copy /src-0/pom.xml java/pom.xml" #8 started: 2018-09-05 19:30:55.203449147 +0000 UTC #8 completed: 2018-09-05 19:30:55.203449147 +0000 UTC #8 duration: 0s #8 cached: true #13 exporting to image #13 digest: sha256:d536dc2895c30fbde898bb4635581350a87c21f3695913ba21850a73d31422d9 #13 name: "exporting to image" #13 started: 2018-09-05 19:30:55.203674127 +0000 UTC #13 exporting layers done #13 writing image sha256:d57028743ca10bb4d0527a294d5c83dd941aeb1033d4fe08949a135677846179 0.1s done #13 naming to docker.io/library/java-test:latest #13 completed: 2018-09-05 19:30:55.341300051 +0000 UTC #13 duration: 137.625924ms #13 naming to docker.io/library/java-test:latest 0.0s done
time docker build .
docker build . | while read line ; do echo "$(date)| $line"; done;
Wed 5 Sep 2018 19:12:22 BST| Sending build context to Docker daemon 27.65kB
Wed 5 Sep 2018 19:12:22 BST| Step 1/19 : FROM centos:centos7
Wed 5 Sep 2018 19:12:22 BST| ---> 49f7960eb7e4
...
您可以通过仅输出“ Step？/？：”行来改善结果，如下所示：
docker build . | grep "^Step" | while read line ; do echo "$(date +%s)| $line"; done;
docker build . | grep "^Step" | while read line ; do echo "$(date +%s)| $line"; done;JSON输出
如果要在CI / CD管道中运行，或将其添加到开发人员工具中，则可以将其变成脚本。
1536171476| Step 1/19 : FROM centos:centos7
1536171476| Step 2/19 : ENV TERM xterm
1536171476| Step 3/19 : RUN *** omitted ***
1536171476| Step 4/19 : RUN *** omitted ***
1536171476| Step 5/19 : COPY *** omitted ***
1536171476| Step 6/19 : RUN *** omitted ***
1536171476| Step 7/19 : COPY *** omitted ***
#!/bin/bash
# script: time-docker-build.sh
#
# All command line arguments are passed to docker build command.
#
# usage: ./time-docker-build.sh
#
DATE_FORMAT="+%s"
(
# Output START line
echo "$(date $DATE_FORMAT) | - 0 - START"
docker build $* . | \
grep "^Step" | \
while read line ;
do
# Output build output prefixed with date
echo "$(date $DATE_FORMAT) | $line";
done;
# Output END line
echo "$(date $DATE_FORMAT) | - -1 - END"
) | (
# Generate JSON array output.
# - START is step: 0
# - END is step: -1
echo "["
FIRST_RUN=true
while read line ;
do
[[ -z "$FIRST_RUN" ]] && echo "," # if not first line, print ','
lineArray=($line)
time="${lineArray[0]}" # step is 0th
step="${lineArray[3]}" # step is 2nd
cmd="${lineArray[@]:5}" # cmd is everything after 5th
stepNum=${step/\/*/}
escapedCmd="${cmd//\"/\\\"}" # escape all double quotes '"'
echo " {"
echo " \"time\": $time,"
echo " \"step\": $stepNum,"
echo " \"cmd\": \"$escapedCmd\""
echo -n " }"
unset FIRST_RUN
done
echo
echo "]"
)
可以在此处大致了解脚本：
https://gist.github.com/philpoore/05eca572f3aadf70f529c470ac679147
我遇到了同样的问题，有一个名为ts的命令行实用程序可以解决该问题（moreutils的一部分）：
$ docker build . | ts Aug 09 09:09:56 Sending build context to Docker daemon 21.2MB Aug 09 09:09:56 Step 1/22 : FROM node:alpine as apibuild Aug 09 09:09:56 ---> 5a519d1e3a24 [...] Aug 09 09:12:56 Successfully built 80bf576659e9
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