build: переработан Docker-образ

Dockerfile

@@ -1,15 +1,29 @@
 # syntax = docker/dockerfile:1.3
-FROM gradle:jdk11 as builder
-RUN mkdir -p out
-WORKDIR /home/gradle
-COPY --chown=gradle . /home/gradle/
-RUN --mount=type=cache,target=/home/gradle/myapp/.gradle \
-    --mount=type=cache,target=/home/gradle/myapp/build \
-    gradle bootJar --no-daemon && cp build/libs/*.jar /home/gradle/out
-
-FROM openjdk:11-jre as bin-linux
-COPY --from=builder /home/gradle/out/evil-bot-1.0-SNAPSHOT.jar /usr/bin/evil-bot.jar
-RUN adduser --system app
-USER app
-WORKDIR /home/app
-CMD ["java", "-jar", "/usr/bin/evil-bot.jar"]
+FROM openjdk:11-jdk-slim-bullseye as base
+
+WORKDIR /app
+
+COPY gradle ./gradle
+COPY ["build.gradle.kts", "gradle.properties",  "gradlew", "settings.gradle", "./"]
+
+RUN --mount=type=cache,target=/root/.gradle \
+    --mount=type=cache,target=/app/build \
+    ./gradlew build || return 0
+
+COPY src/main ./src/main
+
+FROM base as build
+
+RUN --mount=type=cache,target=/root/.gradle \
+    --mount=type=cache,target=/app/build \
+    ./gradlew build
+
+RUN jar xf build/libs/*.jar BOOT-INF META-INF
+
+FROM openjdk:11-jre-slim-bullseye
+
+COPY --from=build /app/BOOT-INF/lib ./lib
+COPY --from=build /app/META-INF ./META-INF
+COPY --from=build /app/BOOT-INF/classes ./
+
+ENTRYPOINT exec java -cp .:./lib/* com.github.djaler.evilbot.ApplicationKt