docs: migrate to v2 jre#953
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| Please note that the Ubuntu 22.04 JRE images are Dockerfile-base | ||
| images, whereas from Ubuntu 24.04 onward the images |
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We should cover this using docker.legacy fields.
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Could you provide some information about how to use the legacy docker images? @vpa1977
Check this section of the docs for reference about the docker.legacy field.
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@asanvaq there are some notes in the deleted sections:
There as also readmes for the each image:
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| For Ubuntu 24.04 JRE | ||
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| ```bash | ||
| docker run --rm --name jre-container -e TZ=UTC ubuntu/jre:21-24.04_edge exec java | ||
| ``` | ||
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| The container logs will simply show the OpenJRE help message. | ||
| This is because the container expects a compiled Java application to be given. | ||
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| Let's use the following Hello World application as an example: | ||
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| ```java | ||
| // HelloWorld.java | ||
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| class HelloWorld | ||
| { | ||
| public static void main(String args[]) | ||
| { | ||
| System.out.println("Hello, World"); | ||
| } | ||
| } | ||
| ``` | ||
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| You can build and package the above Hello World application with | ||
| chiselled Ubuntu 22.04 JRE 8 and 17 using the following example | ||
| Dockerfile. | ||
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| ```docker | ||
| FROM ubuntu:22.04 AS builder | ||
| RUN apt-get update && apt-get install -y openjdk-8-jdk | ||
| WORKDIR /app | ||
| ADD HelloWorld.java . | ||
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| RUN javac -source 8 -target 8 HelloWorld.java -d . | ||
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| FROM ubuntu/jre:8-22.04_edge | ||
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| WORKDIR / | ||
| COPY --from=builder /app/HelloWorld.class . | ||
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| CMD [ "HelloWorld" ] | ||
| ``` | ||
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| For Ubuntu 24.04 please use | ||
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| ```docker | ||
| FROM ubuntu:24.04 AS builder | ||
| RUN apt-get update && apt-get install -y openjdk-8-jdk | ||
| WORKDIR /app | ||
| ADD HelloWorld.java . | ||
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| RUN javac -source 8 -target 8 HelloWorld.java -d . | ||
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| FROM ubuntu/jre:21-24.04_edge | ||
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| COPY --from=builder /app/HelloWorld.class . | ||
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| CMD [ "exec", "java", "-cp", "/", "HelloWorld" ] | ||
| ``` |
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Description
Update docs to v2.