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-rw-r--r--src/main/docker/runtime/.gitignore6
-rw-r--r--src/main/docker/runtime/Dockerfile30
-rwxr-xr-xsrc/main/docker/runtime/build36
-rwxr-xr-xsrc/main/docker/runtime/prepare16
4 files changed, 88 insertions, 0 deletions
diff --git a/src/main/docker/runtime/.gitignore b/src/main/docker/runtime/.gitignore
new file mode 100644
index 0000000..3ed2fbd
--- /dev/null
+++ b/src/main/docker/runtime/.gitignore
@@ -0,0 +1,6 @@
+# SPDX-FileCopyrightText: © 2022 Matthias Andreas Benkard <code@mail.matthias.benkard.de>
+#
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+/cache
+/jdk-dist
diff --git a/src/main/docker/runtime/Dockerfile b/src/main/docker/runtime/Dockerfile
new file mode 100644
index 0000000..80d5b05
--- /dev/null
+++ b/src/main/docker/runtime/Dockerfile
@@ -0,0 +1,30 @@
+# SPDX-FileCopyrightText: © 2022 Matthias Andreas Benkard <code@mail.matthias.benkard.de>
+#
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+FROM registry.access.redhat.com/ubi8/ubi-minimal:latest AS ubi-minimal
+
+# Add OpenJDK (complete).
+ADD jdk-dist/latest.tar.gz /jdk
+
+# JLink a trimmed JDK.
+RUN microdnf --assumeyes --nodocs install binutils
+RUN /jdk/*/bin/jlink \
+ -J-XX:MaxRAMPercentage=75 \
+ --add-modules ALL-MODULE-PATH \
+ --compress=1 \
+ --no-man-pages \
+ --strip-debug \
+ --output /java
+RUN /java/bin/java -Xshare:dump
+
+# Set mtimes to @0 for reproducibility.
+RUN microdnf --assumeyes --nodocs install findutils
+RUN find /java -exec touch --date=@0 '{}' ';'
+
+# Build the final image.
+FROM registry.access.redhat.com/ubi8/ubi-micro:latest
+COPY --from=ubi-minimal /lib64/libz.so.1 /lib64/
+COPY --from=ubi-minimal /java /java
+ENV JAVA_HOME=/java
+ENV PATH=/java/bin:$PATH
diff --git a/src/main/docker/runtime/build b/src/main/docker/runtime/build
new file mode 100755
index 0000000..01347d7
--- /dev/null
+++ b/src/main/docker/runtime/build
@@ -0,0 +1,36 @@
+#! /bin/sh
+# SPDX-FileCopyrightText: © 2022 Matthias Andreas Benkard <code@mail.matthias.benkard.de>
+#
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+set -euo pipefail
+
+cd "$(dirname $(readlink -e "$0"))"
+
+image=docker.benkard.de/mulk/openjdk-runtime:latest
+use_kaniko=no
+
+./prepare
+
+if [[ "${use_kaniko}" == yes ]]; then
+ docker run \
+ --mount type=bind,src="$PWD",target=/workspace \
+ gcr.io/kaniko-project/warmer:latest \
+ --cache-dir=/workspace/cache \
+ --image=registry.access.redhat.com/ubi8/ubi-micro:latest \
+ --image=registry.access.redhat.com/ubi8/ubi-minimal:latest
+
+ docker run \
+ --mount type=bind,src="$PWD",target=/workspace \
+ --mount type=bind,src="$HOME/.docker",target=/root/.docker,ro=true \
+ gcr.io/kaniko-project/executor:latest \
+ --dockerfile Dockerfile \
+ --destination "${image}" \
+ --context dir:///workspace/ \
+ --cache=true \
+ --cache-ttl=16800h0m0s \
+ --reproducible=true
+else
+ docker build -t "${image}" .
+ docker push "${image}"
+fi
diff --git a/src/main/docker/runtime/prepare b/src/main/docker/runtime/prepare
new file mode 100755
index 0000000..f0fddba
--- /dev/null
+++ b/src/main/docker/runtime/prepare
@@ -0,0 +1,16 @@
+#! /bin/sh
+# SPDX-FileCopyrightText: © 2022 Matthias Andreas Benkard <code@mail.matthias.benkard.de>
+#
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+set -euo pipefail
+
+cd "$(dirname $(readlink -e "$0"))"
+
+openjdk_package_info=$(curl "https://api.foojay.io/disco/v2.0/packages?package_type=jdk&latest=per_distro&directly_downloadable=true&release_status=ga&javafx_bundled=false&operating_system=linux&architecture=x64&archive_type=tar.gz&distro=oracle_open_jdk")
+
+openjdk_package_uri=$(jq -r '.result[0].links.pkg_download_redirect' <<<"${openjdk_package_info}")
+openjdk_package_filename=$(jq -r '.result[0].filename' <<<"${openjdk_package_info}")
+curl --fail --create-dirs -C - -o "jdk-dist/${openjdk_package_filename}" "${openjdk_package_uri}"
+
+ln -svf "${openjdk_package_filename}" "jdk-dist/latest.tar.gz"