feat: move build cmds to script, generate custom jre

build.sh

@@ -0,0 +1,30 @@
+#!/usr/bin/sh -eu
+
+export PATH="$PWD/jdk/bin:$PATH"
+export JAVA_HOME="$PWD/jdk"
+
+# check if JDK works
+java --version
+
+# build TESLauncher
+cd src
+./gradlew shadowJar
+cd ..
+
+# install built JAR named TESLauncher-x.y.z.jar
+find src/build/libs/ -name "TESL*.jar" -type f -exec \
+  install -D -m 644 {} /app/tesl.jar \;
+#
+
+# generate JRE with all modules enabled
+jlink \
+  --strip-debug --no-man-pages --no-header-files --compress=2 \
+  --add-modules ALL-MODULE-PATH --output jre
+#
+
+# check if JRE works
+./jre/bin/java --version
+
+# install JRE
+mkdir -p /app/lib/jvm/openj9
+cp -r ./jre/* /app/lib/jvm/openj9

me.theentropyshard.teslauncher.yml

@@ -3,29 +3,24 @@ runtime: org.freedesktop.Platform
 runtime-version: '24.08'
 sdk: org.freedesktop.Sdk
 command: /app/tesl.sh
+
 build-options:
   build-args:
     # sorry, but i dont want to google how to vendor gradle deps
     - --share=network
+
 finish-args:
   - --share=ipc
   - --socket=x11
   - --device=dri
   - --socket=pulseaudio
   - --share=network
+
 modules:
-  - name: openj9
-    buildsystem: simple
-    sources:
-      - type: archive
-        strip-components: 0
-        url: https://pkg.dc09.ru/openj9/jre.tar.zst
-        sha256: b9e288ea41dedc3ba3090299a2c90185dbe155c33219ced67ed1a99dc4751125
-    build-commands:
-      - './bin/java --version'
-      - 'mkdir -p /app/lib/jvm/openj9'
-      - 'cp -r ./* /app/lib/jvm/openj9'
-  - name: tesl-build
+  # 1.
+  # download OpenJ9 JDK, build TESLauncher, install JAR,
+  # generate JRE with jlink and install it
+  - name: build
     buildsystem: simple
     sources:
       - type: archive
@@ -37,11 +32,14 @@ modules:
         url: https://git.dc09.ru/TESLauncher/TESLauncher.git
         branch: master
         dest: src
+      - type: file
+        path: build.sh
     build-commands:
-      - 'PATH="$PWD/jdk/bin:$PATH" JAVA_HOME="$PWD/jdk" java --version'
-      - 'export PATH="$PWD/jdk/bin:$PATH" JAVA_HOME="$PWD/jdk" && cd src && ./gradlew shadowJar && cd ..'
-      - 'find src/build/libs/ -name "TESL*.jar" -type f -exec install -D -m 644 {} /app/tesl.jar \;'
-  - name: tesl-run
+      - 'chmod +x build.sh && ./build.sh'
+
+  # 2.
+  # install a script and a dot-desktop
+  - name: run
     buildsystem: simple
     sources:
       - type: file