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docker - 如何在 Docker 中使用 java 11？

问题描述

在我的 DockerFile 中，我的 FROM 行如下：

FROM openjdk:11-jdk-alpine 作为构建

以前它在 java 8 上，一切正常。

现在我得到这个错误：

C:\dev\shape-shop-back-end>docker build .
[+] Building 2.0s (5/5) FINISHED
 => [internal] load build definition from Dockerfile                                                               0.1s
 => => transferring dockerfile: 1.31kB                                                                             0.0s
 => [internal] load .dockerignore                                                                                  0.0s
 => => transferring context: 2B                                                                                    0.0s
 => CANCELED [internal] load metadata for docker.io/library/openjdk:11-jre-alpine                                  1.8s
 => ERROR [internal] load metadata for docker.io/library/openjdk:11-jdk-alpine                                     1.8s
 => [auth] library/openjdk:pull token for registry-1.docker.io                                                     0.0s
------
 > [internal] load metadata for docker.io/library/openjdk:11-jdk-alpine:
------
failed to solve with frontend dockerfile.v0: failed to create LLB definition: docker.io/library/openjdk:11-jdk-alpine: not found

我的码头文件：

#### Stage 1: Build the application
FROM openjdk:11-jdk-alpine as build

# Set the current working directory inside the image
WORKDIR /app
# Copy maven executable to the image
COPY mvnw .
COPY .mvn .mvn

# Copy the pom.xml file
COPY pom.xml .

# Build all the dependencies in preparation to go offline.
# This is a separate step so the dependencies will be cached unless
# the pom.xml file has changed.
RUN ./mvnw dependency:go-offline -B

# Copy the project source
COPY src src

# Package the application
RUN ./mvnw package -DskipTests
RUN mkdir -p target/dependency && (cd target/dependency; jar -xf ../*.jar)

#### Stage 2: A minimal docker image with command to run the app
FROM openjdk:11-jre-alpine

ARG DEPENDENCY=/app/target/dependency

# Copy project dependencies from the build stage
COPY --from=build ${DEPENDENCY}/BOOT-INF/lib /app/lib
COPY --from=build ${DEPENDENCY}/META-INF /app/META-INF
COPY --from=build ${DEPENDENCY}/BOOT-INF/classes /app

ENTRYPOINT ["java","-cp","app:app/lib/*","com.shapeshop.App"]
#ARG JAR_FILE=target/*.jar
#COPY ${JAR_FILE} app.jar

#ENTRYPOINT ["java","-jar","/app.jar"]
#
## Expose port 80 to the Docker host, so we can access it
## from the outside.
#EXPOSE 8080

我错过了什么吗？

标签： dockermaven

解决方案

这可能会有所帮助： https ://hub.docker.com/_/openjdk

“Alpine 的 OpenJDK 端口不在 OpenJDK 支持的版本中，因为它不在主线代码库中。它仅作为 OpenJDK Project Portola 的早期访问版本提供。另请参阅此评论。因此，此图像遵循可用的内容来自 OpenJDK 项目的维护者。

这意味着基于 Alpine 的映像仅针对 OpenJDK 的早期访问版本发布。一旦特定版本成为“通用”版本，Alpine 版本就会从“支持的标签”中删除；它们仍然可以拉取，但将不再更新。”

我不使用 java 图像，这可能就足够了： https ://hub.docker.com/r/adoptopenjdk/openjdk11/

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