liberty:devc: <dockerfile> 不被尊重

Question

我观察到<dockerfile> 元素，尽管它指向一个有效的Dockerfile，但liberty:devc 不支持它。

考虑mvn help:effective-pom的这个输出：

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <parent>
    <groupId>javaee-cafe</groupId>
    <artifactId>javaee-cafe-parent</artifactId>
    <version>1.0.0</version>
    <relativePath />
  </parent>
  <groupId>javaee-cafe</groupId>
  <artifactId>javaee-cafe-jcache</artifactId>
  <version>1.0.3</version>
  <packaging>war</packaging>
  <name>javaee-cafe-jcache</name>
  <properties>
    <dockerFileName>Dockerfile</dockerFileName>
    <failOnMissingWebXml>false</failOnMissingWebXml>
    <!-- elided -->
    <usrDirectory>/home/edburns/workareas/open-liberty-on-aks/javaee-app-redisson/target/liberty/wlp/usr</usrDirectory>
  </properties>
  <dependencies><!-- elided --></dependencies>
  <build>
    <sourceDirectory>/home/edburns/workareas/open-liberty-on-aks/javaee-app-redisson/src/main/java</sourceDirectory>
    <!-- elided -->
    <resources>
      <resource>
        <filtering>true</filtering>
        <directory>/home/edburns/workareas/open-liberty-on-aks/javaee-app-redisson/src/main/resources</directory>
      </resource>
    </resources>
    <directory>/home/edburns/workareas/open-liberty-on-aks/javaee-app-redisson/target</directory>
    <finalName>javaee-cafe-jcache</finalName>
    <plugins>
      <!-- elided -->
      <plugin>
        <groupId>io.openliberty.tools</groupId>
        <artifactId>liberty-maven-plugin</artifactId>
        <version>3.3.4</version>
        <executions>
          <execution>
            <id>package-server</id>
            <phase>package</phase>
            <goals>
              <goal>create</goal>
              <goal>install-feature</goal>
              <goal>deploy</goal>
            </goals>
            <configuration>
              <container>true</container>
              <dockerfile>/home/edburns/workareas/open-liberty-on-aks/javaee-app-redisson/target/Dockerfile</dockerfile>
              <libertyRuntimeVersion>[21.0.0.5,)</libertyRuntimeVersion>
              <serverXmlFile>/home/edburns/workareas/open-liberty-on-aks/javaee-app-redisson/target/liberty/wlp/usr/servers/defaultServer/server.xml</serverXmlFile>
              <copyDependencies><!-- elided --></copyDependencies>
              <outputDirectory>/home/edburns/workareas/open-liberty-on-aks/javaee-app-redisson/target/wlp-package</outputDirectory>
            </configuration>
          </execution>
        </executions>
      </plugin>
  </build>
</project>

当我运行mvn liberty:devc 时，我看到了这个输出：

[INFO] Scanning for projects...
[INFO]
[INFO] -------------------< javaee-cafe:javaee-cafe-jcache >-------------------
[INFO] Building javaee-cafe-jcache 1.0.3
[INFO] --------------------------------[ war ]---------------------------------
[INFO]
[INFO] --- liberty-maven-plugin:3.3.4:devc (default-cli) @ javaee-cafe-jcache ---
[INFO] CWWKM2102I: Using artifact based assembly archive : io.openliberty:openliberty-kernel:null:21.0.0.5:zip.
[INFO] CWWKM2102I: Using installDirectory : /home/edburns/workareas/open-liberty-on-aks/javaee-app-redisson/target/liberty/wlp.
[INFO] CWWKM2102I: Using serverName : defaultServer.
[INFO] CWWKM2102I: Using serverDirectory : /home/edburns/workareas/open-liberty-on-aks/javaee-app-redisson/target/liberty/wlp/usr/servers/defaultServer.
<!-- elided -->
[INFO] Running liberty:deploy
[INFO] The liberty.runtime.version property value [21.0.0.5,) is used for the runtimeArtifact version.
[INFO] CWWKM2102I: Using artifact based assembly archive : io.openliberty:openliberty-kernel:null:21.0.0.5:zip.
[INFO] CWWKM2102I: Using installDirectory : /home/edburns/workareas/open-liberty-on-aks/javaee-app-redisson/target/liberty/wlp.
[INFO] CWWKM2102I: Using serverName : defaultServer.
[INFO] CWWKM2102I: Using serverDirectory : /home/edburns/workareas/open-liberty-on-aks/javaee-app-redisson/target/liberty/wlp/usr/servers/defaultServer.
[INFO] Copying 1 file to /home/edburns/workareas/open-liberty-on-aks/javaee-app-redisson/target/liberty/wlp/usr/servers/defaultServer
[WARNING] The /home/edburns/workareas/open-liberty-on-aks/javaee-app-redisson/src/main/liberty/config/server.xml file is overwritten by the /home/edburns/workareas/open-liberty-on-aks/javaee-app-redisson/target/liberty/wlp/usr/servers/defaultServer/server.xml file.
[INFO] Copying 1 file to /home/edburns/workareas/open-liberty-on-aks/javaee-app-redisson/target/liberty/wlp/usr/servers/defaultServer
[INFO] CWWKM2144I: Update server configuration file server.xml from /home/edburns/workareas/open-liberty-on-aks/javaee-app-redisson/target/liberty/wlp/usr/servers/defaultServer/server.xml.
[INFO] CWWKM2144I: Update server configuration file bootstrap.properties from inlined configuration.
<!-- elided -->
[INFO] CWWKM2185I: The liberty-maven-plugin configuration parameter "appsDirectory" value defaults to "apps".
[INFO] CWWKM2160I: Installing application javaee-cafe-jcache.war.xml.
[INFO] Parsing the server file /home/edburns/workareas/open-liberty-on-aks/javaee-app-redisson/target/liberty/wlp/usr/servers/defaultServer/server.xml for features and includes.
[INFO] Copying 1 file to /home/edburns/workareas/open-liberty-on-aks/javaee-app-redisson/target/liberty/wlp/usr/servers/defaultServer
[INFO] CWWKM2144I: Update server configuration file server.xml from /home/edburns/workareas/open-liberty-on-aks/javaee-app-redisson/src/main/liberty/config/server.xml.
[INFO] CWWKM2144I: Update server configuration file bootstrap.properties from inlined configuration.
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  5.665 s
[INFO] Finished at: 2021-06-10T18:05:42-04:00
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal io.openliberty.tools:liberty-maven-plugin:3.3.4:devc (default-cli) on project javaee-cafe-jcache: No Dockerfile was found at /home/edburns/workareas/open-liberty-on-aks/javaee-app-redisson/Dockerfile. Create a Dockerfile at the specified location to use dev mode with container support. For an example of how to configure a Dockerfile, see https://github.com/OpenLiberty/ci.docker -> [Help 1]
<!-- elided -->
Compilation exited abnormally with code 1 at Thu Jun 10 18:05:42

看起来<dockerfile>，虽然存在，但没有得到尊重。

<dockerfile>/home/edburns/workareas/open-liberty-on-aks/javaee-app-redisson/target/Dockerfile</dockerfile>

这是一个错误吗？

谢谢，

埃德

Answer 1

解决方案：使用插件级配置（不是执行级）

您需要在插件级别而不是执行级别添加配置。

所以它应该看起来更像：

      <plugin>
        <groupId>io.openliberty.tools</groupId>
        <artifactId>liberty-maven-plugin</artifactId>
        <version>3.3.4</version>
        <configuration>
          <dockerfile>/home/edburns/workareas/open-liberty-on-aks/javaee-app-redisson/target/Dockerfile</dockerfile>
          <!-- ... rest of config ... -->
        </configuration>
      </plugin>

liberty:dev 和 liberty:devc 目标将生命周期封装在单个目标中，在循环中迭代执行，但执行级配置没有太多用处。 （不确定这是否真的记录得很好。）

其他想法

如果您查看我们的示例指南中的pom.xml，例如this one，您会发现我们甚至无需费心配置绑定到包等阶段的其他 Liberty 目标，例如创建、部署等。

我们只是使用 liberty:dev 和 liberty:devc 进行迭代开发，然后在构建镜像的时候，我们执行mvn package 让 maven-war-plugin 构建战争，然后执行 Docker 构建以将 WAR 构建到应用映像中。

当然，您可能有理由将其包含在内，而我正在偏离主题，但只是在此处添加更多上下文。