Import from MulkCMS 2.

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+// SPDX-FileCopyrightText: © 2022 Matthias Andreas Benkard <code@mail.matthias.benkard.de>
+//
+// SPDX-License-Identifier: GFDL-1.3-or-later
+
+= openjdk-runtime
+Matthias Andreas Benkard
+// Meta
+:experimental:
+:data-uri:
+:sectnums:
+:toc:
+:stem:
+:keywords: mulk
+// Settings
+:icons: font
+:source-highlighter: rouge
+
+A container image that contains an OpenJDK runtime suitable for running
+modern web services.
+
+
+== Summary
+
+This container image ships the latest OpenJDK feature release from
+https://jdk.java.net[jdk.java.net] on top of a
+https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/building_running_and_managing_containers/assembly_types-of-container-images_building-running-and-managing-containers#con_understanding-the-ubi-micro-images_assembly_types-of-container-images[Red
+Hat UBI Micro] base.
+
+The module set was selected for
+https://gerrit.benkard.de/plugins/gitiles/mulkcms2/[MulkCMS 2], which
+is a typical Quarkus application.  It will very likely work for other
+typical Quarkus applications.
+
+
+== Building
+
+[source,shell]
+----
+./prepare
+docker build -t $IMAGE_NAME .
+----
+
+
+== Customization
+
+You may want to customize the module set included in the JDK.
+
+For example, specifying `ALL-MODULE-PATH` includes all modules
+included in the OpenJDK distribution:
+
+[source,dockerfile]
+----
+RUN /jdk/*/bin/jlink \
+    -J-XX:MaxRAMPercentage=75 \
+    --add-modules ALL-MODULE-PATH \ #<1>
+    --compress=1 \
+    --no-man-pages \
+    --strip-debug \
+    --output /java
+----
+<1> Include all JDK modules.
+
+
+== Usage
+
+[source,shell]
+----
+docker run $IMAGE_NAME java -version
+----