Update README.md docker build instructions in case of missing JDK from container image

.github/README.md

@@ -0,0 +1,257 @@
+[![official JetBrains project](http://jb.gg/badges/official.svg)](https://confluence.jetbrains.com/display/ALL/JetBrains+on+GitHub)
+
+# Welcome to JetBrains Runtime!
+
+JetBrains Runtime is a fork of [OpenJDK](https://github.com/openjdk/jdk) available for Windows, Mac OS X, and Linux.
+It supports enhanced class redefinition ([DCEVM](https://ssw.jku.at/dcevm/)),
+features optional [JCEF](https://github.com/JetBrains/jcef), a framework for embedding Chromium-based browsers,
+includes a number of improvements in font rendering, keyboards support, 
+windowing/focus subsystems, HiDPI, accessibility, and performance, provides better desktop integration
+and bugfixes not yet present in OpenJDK.
+
+> **_NOTE_**: This is a **development** branch that is periodically synchronized with 
+> the [OpenJDK master](https://github.com/openjdk/jdk/tree/master) branch.
+> 
+ Release builds are based on these branches:
+ * [jbr11](https://github.com/JetBrains/JetBrainsRuntime/tree/jbr11) (JDK 11)
+ * [jbr17](https://github.com/JetBrains/JetBrainsRuntime/tree/jbr17) (JDK 17)
+ * [jbr21](https://github.com/JetBrains/JetBrainsRuntime/tree/jbr21) (JDK 21)
+
+Download the latest releases of JetBrains Runtime to use with JetBrains IDEs. The full list
+can be found on the [releases page](https://github.com/JetBrains/JetBrainsRuntime/releases).
+
+## Releases based on JDK 21
+
+| IDE Version | Latest JBR                                                                                              | Date Released |
+|-------------|---------------------------------------------------------------------------------------------------------|---------------|
+| 2025.1      | [21.0.6-b872.80](https://github.com/JetBrains/JetBrainsRuntime/releases/tag/jbr-release-21.0.6b872.80)  | 03-Feb-2025   |
+| 2024.3      | [21.0.5-b631.28](https://github.com/JetBrains/JetBrainsRuntime/releases/tag/jbr-release-21.0.5b631.28)  | 26-Nov-2024   |
+| 2024.2      | [21.0.4-b509.30](https://github.com/JetBrains/JetBrainsRuntime/releases/tag/jbr-release-21.0.5b509.30)  | 26-Nov-2024   |
+| 2024.1      | [21.0.2-b346.3](https://github.com/JetBrains/JetBrainsRuntime/releases/tag/jbr-release-21.0.2b346.3)    | 30-Jan-2024   |
+
+## Releases based on JDK 17
+
+| IDE Version | Latest JBR                                                                                             | Date Released |
+|-------------|--------------------------------------------------------------------------------------------------------|---------------|
+| 2024.2      | [17.0.11-b1312.2](https://github.com/JetBrains/JetBrainsRuntime/releases/tag/jbr-release-17.0.11b1312.2)   | 18-Jun-2024|
+| 2024.1      | [17.0.12-b1207.37](https://github.com/JetBrains/JetBrainsRuntime/releases/tag/jbr-release-17.0.12b1207.37) | 15-Oct-2024|
+| 2023.3      | [17.0.12-b1087.25](https://github.com/JetBrains/JetBrainsRuntime/releases/tag/jbr-release-17.0.12b1087.25) | 02-Sep-2024|
+| 2023.2      | [17.0.12-b1000.54](https://github.com/JetBrains/JetBrainsRuntime/releases/tag/jbr-release-17.0.12b1000.54) | 02-Sep-2024|
+| 2023.1      | [17.0.10-b829.27](https://github.com/JetBrains/JetBrainsRuntime/releases/tag/jbr-release-17.0.10b829.27) | 21-Mar-2024  |
+| 2022.3      | [17.0.6-b653.34](https://github.com/JetBrains/JetBrainsRuntime/releases/tag/jbr-release-17.0.6b653.34) | 28-Feb-2023   |
+| 2022.2      | [17.0.6-b469.82](https://github.com/JetBrains/JetBrainsRuntime/releases/tag/jbr-release-17.0.6b469.82) | 06-Mar-2023   |
+
+## Releases based on JDK 11
+
+| IDE Version | Latest JBR                                                                                            | Date Released |
+|-------------|-------------------------------------------------------------------------------------------------------|---------------|
+| 2022.1      | [11_0_16-b2043.64](https://github.com/JetBrains/JetBrainsRuntime/releases/tag/jbr11_0_16b2043.64)     | 10-Nov-2022   |
+| 2021.3      | [11_0_14_1-b1751.46](https://github.com/JetBrains/JetBrainsRuntime/releases/tag/jbr11_0_14_1b1751.46) | 21-Feb-2022   |
+| 2021.2      | [11_0_13-b1504.49](https://github.com/JetBrains/JetBrainsRuntime/releases/tag/jb11_0_13-b1504.49)     | 15-Nov-2021   |
+| 2021.1      | [11.0.11+9-b1341.60](https://github.com/JetBrains/JetBrainsRuntime/issues/171#issuecomment-1248891540)| 15-Jun-2021   |
+| 2020.3      | [11_0_10-b1145.115](https://github.com/JetBrains/JetBrainsRuntime/issues/171#issuecomment-1249243977) | 21-Jun-2021   |
+
+## Contents
+- [Welcome to JetBrains Runtime](#welcome-to-jetbrains-runtime)
+  - [Why Use JetBrains Runtime?](#why-use-jetbrains-runtime)
+  - [Products Built on JetBrains Runtime](#products-built-on-jetbrains-runtime)
+  - [Getting Sources](#getting-sources)
+    - [macOS, Linux](#macos-linux)
+    - [Windows](#sources-windows)
+  - [Configuring the Build Environment](#configuring-the-build-environment)
+    - [Linux (Docker)](#linux-docker)
+    - [Ubuntu Linux](#ubuntu-linux)
+    - [Windows](#build-windows)
+    - [macOS](#macos)
+  - [Developing](#developing)
+  - [Contributing](#contributing)
+  - [Resources](#resources)
+
+## Why Use JetBrains Runtime?
+* **Embedded browser**: JetBrains Runtime includes the Java Chromium Embedded Framework ([JCEF](https://github.com/JetBrains/jcef)), which
+  enables you to embed a Chromium-based browsers in your JVM-based application. 
+ To use it, [download a build with JCEF](https://github.com/JetBrains/JetBrainsRuntime/releases).
+* **Enhanced class re-definition** with the [DCEVM](https://ssw.jku.at/dcevm/) technology that makes it easier to reload
+  changed code without restarting JVM; this feature needs to be explicitly enabled with `-XX:+AllowEnhancedClassRedefinition`.
+* **Better FPS performance** for graphics-intensive applications.
+* **Improved font rendering**, **keyboard input** (such as shortcuts and multinational keyboards),
+  **HiDPI** and **accessibility** support.
+* **Robust desktop experience**: GUI-related fixes often reach JetBrains Runtime much earlier than the corresponding version of OpenJDK.
+
+## Products Built on JetBrains Runtime
+* [Android Studio](https://developer.android.com/studio). The official IDE for Google's Android operating system.
+* [CLion](https://www.jetbrains.com/clion/). A cross-platform IDE for C and C++ from JetBrains.
+* [DataGrip](https://www.jetbrains.com/datagrip/). The IDE for Databases and SQL from JetBrains.
+* [GoLand](https://www.jetbrains.com/go/). The cross-platform Go IDE from JetBrains.
+* [IntelliJ IDEA](https://www.jetbrains.com/idea/). The IDE for JVM from JetBrains.
+* [JProfiler](https://www.ej-technologies.com/products/jprofiler/overview.html). The Java profiler.
+* [PhpStorm](https://www.jetbrains.com/phpstorm/). The PHP IDE from JetBrains.
+* [PyCharm](https://www.jetbrains.com/pycharm/). The Python IDE from JetBrains.
+* [Rider](https://www.jetbrains.com/rider/). The cross-platform .NET IDE from JetBrains.
+* [RubyMine](https://www.jetbrains.com/ruby/). The Ruby and Rails IDE from JetBrains.
+* [Toolbox App](https://www.jetbrains.com/toolbox-app/). JetBrains IDE manager.
+* [WebStorm](https://www.jetbrains.com/webstorm/). The JavaScript IDE from JetBrains.
+* [YourKit](https://www.yourkit.com/). Java and .NET profilers.
+
+## Getting Sources
+### macOS, Linux
+```
+git config --global core.autocrlf input
+git clone [email protected]:JetBrains/JetBrainsRuntime.git
+```
+
+### Windows
+<a name="sources-windows"></a>
+```
+git config --global core.autocrlf false
+git clone [email protected]:JetBrains/JetBrainsRuntime.git
+```
+
+## Configuring the Build Environment
+Here are quick per-platform instructions for those who can't wait to get started. 
+Please refer to [OpenJDK build docs](https://openjdk.java.net/groups/build/doc/building.html) for in-depth
+coverage of all the details.
+
+> **_TIP:_**  To get a preliminary report of what's missing, run `./configure` and check its output. 
+> It would usually have meaningful advice on how to solve the problem.
+
+### Linux (Docker)
+Download an image from [Docker Hub](https://hub.docker.com/repository/docker/jetbrains/runtime/general) related to your architecture:
+```
+$ docker pull jetbrains/runtime:oraclelinux8_aarch64
+```
+or
+```
+$ docker pull jetbrains/runtime:oraclelinux8_x64
+```
+Create and run a new container from the downloaded image
+```
+$ docker run -v $JetBrainsRuntime:/JetBrainsRuntime:Z -it jetbrains/runtime:oraclelinux8_[arch]
+```
+where `$JetBrainsRuntime` is a full path to the directory where the repository was cloned to.
+
+Run these commands in the container:
+```
+# cd /JetBrainsRuntime
+# sh ./configure
+# make images
+```
+
+If you get an error at the `sh ./configure` stage about the lack of a JDK, you can install one via [SDKMAN!](https://sdkman.io/):
+
+- follow indications to install SDKMAN!
+- run these commands in the container:
+```
+# source "$HOME/.sdkman/bin/sdkman-init.sh"
+# sdk list java // -> pick a suitable JDK identifier (e.g. `23.0.2-tem`)
+# sdk install java 23.0.2-tem
+# sh ./configure
+# make images
+```
+
+### Ubuntu Linux
+Install the necessary tools, libraries, and headers with:
+```
+$ sudo apt-get install autoconf make build-essential libx11-dev libxext-dev libxrender-dev libxtst-dev \
+       libxt-dev libxrandr-dev libcups2-dev libfontconfig1-dev libasound2-dev libspeechd-dev libwayland-dev \
+       wayland-protocols libxkbcommon-x11-0
+```
+Get Java 23 (for instance, [Azul Zulu Builds of OpenJDK 23](https://www.azul.com/downloads/?version=java-23&os=linux&package=jdk#zulu)).
+
+Then run the following:
+```
+$ cd JetBrainsRuntime
+$ git checkout main
+$ sh ./configure
+$ make images
+```
+This will build the release configuration under `./build/linux-x86_64-server-release/`.
+
+### Windows
+<a name="build-windows"></a>
+Install the following:
+* [Cygwin x64](http://www.cygwin.com/).
+  Required packages: `autoconf`, `binutils`, `cpio`, `diffutils`, `file`, `gawk`, `gcc-core`, `make`, `m4`, `unzip`, `zip`.  
+  Install those together with Cygwin.
+* [Visual Studio compiler toolset](https://visualstudio.microsoft.com/downloads/).
+  Install with the desktop development kit, which includes Windows SDK and compilers.
+  Visual Studio 2019 is supported by default.
+* Java 21 (for instance, [Azul Zulu Builds of OpenJDK 21](https://www.azul.com/downloads/?version=java-21-lts&os=windows&package=jdk#zulu)).
+  If you have problems while configuring, read [Java tips on Cygwin](http://horstmann.com/articles/cygwin-tips.html).
+
+From the command line: 
+```
+"C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Auxiliary\Build\vcvarsall.bat" amd64
+"c:\Program_Files\cygwin64\bin\mintty.exe" /bin/bash -l
+```
+The first command sets up environment variables, the second starts a Cygwin shell with the proper environment.  
+
+In the Cygwin shell: 
+```
+$ cd JetBrainsRuntime
+$ git checkout main
+$ bash configure --with-toolchain-version=2019
+$ make images
+```
+This will build the release configuration under `./build/windows-x86_64-server-release/`.
+
+#### Enable optional NVDA screen reader support
+If you want to add support of a11y announcing via [NVDA screen reader](https://www.nvaccess.org/about-nvda/),
+you will need to bundle the NVDA Controller Client library.
+You can do it with the following steps:
+1. Download the NVDA Controller Client library. You can find the link in its official README [here](https://github.com/nvaccess/nvda/blob/master/extras/controllerClient/readme.md)
+2. Pass the path to the unpacked package to `configure` via an additional flag `--with-nvdacontrollerclient=<path>`.
+   The build system will search the required library files under `<path>/<target-arch>`.
+
+#### Disable optional JAWS screen reader support
+JBR is built with built-in support of JAWS screen reader.
+If you want to disable it, run `configure` with the additional flag `--disable-jaws-client`.
+
+### macOS
+Install the following:
+* Xcode command line developer tools and `autoconf` via [Homebrew](https://brew.sh/).
+* Java 21 (for instance, [Azul Zulu Builds of OpenJDK 21](https://www.azul.com/downloads/?version=java-21-lts&os=macos&package=jdk#zulu)).
+
+From the command line:
+```
+$ cd JetBrainsRuntime
+$ git checkout main
+$ sh ./configure
+$ make images
+```
+This will build the release configuration under `./build/macosx-x86_64-server-release/`.
+
+## Developing
+You can use  [CLion](https://www.jetbrains.com/clion/) to develop native parts of the JetBrains Runtime and
+[IntelliJ IDEA](https://www.jetbrains.com/idea/) for the parts written in Java.
+Both require projects to be created.
+
+### CLion
+Run
+```
+$ make compile-commands
+```
+in the git root and open the resulting `build/.../compile_commands.json` file as a project.
+Then use `Tools | Compilation Database | Change Project Root` to point to git root of this repository.
+
+See also this detailed step-by-step tutorial for all platforms:
+[How to develop OpenJDK with CLion](https://blog.jetbrains.com/clion/2020/03/openjdk-with-clion/).
+
+### IDEA
+Run
+```
+$ sh ./bin/idea.sh
+```
+in the git root to generate project files (add `--help` for options). If you have multiple
+configurations (for example, `release` and `fastdebug`), supply the `--conf <conf_name>` argument.
+Then open the git root directory as a project in IDEA.
+
+## Contributing
+We are happy to receive your pull requests! 
+Before you submit one, please sign our [Contributor License Agreement (CLA)](https://www.jetbrains.com/agreements/cla/).
+
+## Resources
+* [JetBrains Runtime on GitHub](https://github.com/JetBrains/JetBrainsRuntime).
+* [OpenJDK build instructions](https://openjdk.java.net/groups/build/doc/building.html).
+* [OpenJDK test instructions](https://htmlpreview.github.io/?https://raw.githubusercontent.com/openjdk/jdk/master/doc/building.html#running-tests).
+* [How to develop OpenJDK with CLion](https://blog.jetbrains.com/clion/2020/03/openjdk-with-clion/).

.github/workflows/main.yml

@@ -31,6 +31,7 @@ on:
       - master
       - pr/*
       - jdk*
+      - main
   workflow_dispatch:
     inputs:
       platforms: