Docker多阶段构建在上一阶段的复制中失败

如何解决Docker多阶段构建在上一阶段的复制中失败

我正在研究一个多阶段docker构建文件，试图将一个额外的war文件添加到我们的基本tomcat映像中。我正在Windows 10工作站上使用Docker for Windows 2.3.0.4在本地运行此版本，该版本使用Docker引擎19.03.12版

我原来的dockerfile看起来像这样

FROM tomcat:9.0.21-jdk8-openjdk

RUN rm -rf /usr/local/tomcat/webapps/*

COPY logging.properties /usr/local/tomcat/conf
COPY tomcat-users.xml /usr/local/tomcat/conf
COPY jt400-jdk8-9.7.jar /usr/local/tomcat/lib
COPY mysql-connector-java-8.0.12.jar /usr/local/tomcat/lib
COPY ojdbc6.jar /usr/local/tomcat/lib
COPY hazelcast-all-3.12.jar /usr/local/tomcat/lib
COPY hazelcast-tomcat85-sessionmanager-1.1.3.jar /usr/local/tomcat/lib
COPY hazelcast-client.xml /usr/local/tomcat/lib
COPY applicationinsights-agent-2.5.1.jar /usr/local/tomcat/lib

我想要做的是从源代码构建psi-probe，并将war文件添加到此基本映像中。 这是我到目前为止所拥有的

FROM maven:3.6.3-openjdk-8 as buildprobe

RUN git clone https://github.com/psi-probe/psi-probe && cd psi-probe

WORKDIR /psi-probe

RUN mvn package && ls -l /psi-probe && ls -l /psi-probe/psi-probe-web/target

FROM tomcat:9.0.21-jdk8-openjdk

RUN rm -rf /usr/local/tomcat/webapps/*

COPY --from=buildprobe /psi-probe/psi-probe-web/taget/probe.war /usr/local/tomcat/webapps

我可以运行docker build --target buildprobe -t buildprobe -f Dockerfile .并生成输出。

注意：我在mvn package之后添加了ls命令，以尝试“调试”正在发生的事情

maven软件包和两个ls命令的输出都被（截断了）

[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary for psi-probe 3.5.1-SNAPSHOT:
[INFO]
[INFO] psi-probe .......................................... SUCCESS [01:07 min]
[INFO] psi-probe-core ..................................... SUCCESS [01:53 min]
[INFO] psi-probe-rest ..................................... SUCCESS [  5.945 s]
[INFO] psi-probe-tomcat7 .................................. SUCCESS [ 14.019 s]
[INFO] psi-probe-tomcat85 ................................. SUCCESS [ 13.403 s]
[INFO] psi-probe-tomcat9 .................................. SUCCESS [  9.391 s]
[INFO] psi-probe-web ...................................... SUCCESS [ 39.060 s]
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  04:30 min
[INFO] Finished at: 2020-08-12T14:39:19Z
[INFO] ------------------------------------------------------------------------
(ls -l /psi-probe)
...
-rw-r--r-- 1 root root 70248 Aug 12 14:29 pom.xml
drwxr-xr-x 1 root root  4096 Aug 12 14:36 psi-probe-core
drwxr-xr-x 1 root root  4096 Aug 12 14:38 psi-probe-rest
drwxr-xr-x 3 root root  4096 Aug 12 14:29 psi-probe-tomcat10
drwxr-xr-x 1 root root  4096 Aug 12 14:38 psi-probe-tomcat7
drwxr-xr-x 1 root root  4096 Aug 12 14:38 psi-probe-tomcat85
drwxr-xr-x 1 root root  4096 Aug 12 14:38 psi-probe-tomcat9
drwxr-xr-x 1 root root  4096 Aug 12 14:38 psi-probe-web
drwxr-xr-x 3 root root  4096 Aug 12 14:29 src
...
(ls -l /psi-probe/psi-probe-web/target)
drwxr-xr-x 2 root root     4096 Aug 12 14:38 classes
drwxr-xr-x 3 root root     4096 Aug 12 14:39 jspc
drwxr-xr-x 2 root root     4096 Aug 12 14:39 maven-archiver
drwxr-xr-x 7 root root     4096 Aug 12 14:39 probe
-rw-r--r-- 1 root root 27372423 Aug 12 14:39 probe.war
drwxr-xr-x 2 root root     4096 Aug 12 14:39 test-classes
-rw-r--r-- 1 root root    33350 Aug 12 14:39 webfrag.xml

但是，当构建进入阶段1（FROM tomcat:9.0.21-jdk8-openjdk）时，它会在COPY命令上失败，

COPY failed: stat /var/lib/docker/overlay2/81826a6b59d58818c342f1d5536489f4658be5e8557084ec572780aaf6ea19bc/merged/psi-probe/psi-probe-web/taget/probe.war: no such file or directory

对于正在开发的角度应用程序，我有一个类似的dockerfile。该文件的内容如下：

FROM node AS build

WORKDIR /app

ENV PATH /app/node_modules/.bin:$PATH

COPY package.json /app/package.json
RUN npm install && npm install -g @angular/cli

COPY . /app

RUN ng build --output-path=dist

FROM nginx

COPY --from=build /app/dist /usr/share/nginx/html

EXPOSE 80

CMD ["nginx","-g","daemon off;"]

在此文件中，上一阶段的COPY可以正常工作，并且图像可以构建

我只是不确定要从源代码构建psi探针，然后将输出内容包含在我的tomcat图像中，这是怎么回事。

解决方法

这将完成工作：

FROM maven:3.6.3-openjdk-8 as buildprobe
RUN git clone https://github.com/psi-probe/psi-probe && cd psi-probe
WORKDIR /psi-probe
RUN mvn package && ls -l /psi-probe && ls -l /psi-probe/psi-probe-web/target

FROM tomcat:9.0.21-jdk8-openjdk
RUN rm -rf /usr/local/tomcat/webapps/*
COPY --from=buildprobe /psi-probe/psi-probe-web/target/probe.war /usr/local/tomcat/webapps

您错过了一个r