chore: initial commit

Author: chrootlogin

.editorconfig

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+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+
+[*.{js,jsx,mjs,cjs,ts,tsx,mts,cts,vue,css,scss,sass,less,styl,java,json,xml}]
+max_line_length = 120
+indent_style = space
+indent_size = 2
+insert_final_newline = true
+trim_trailing_whitespace = true

.gitattributes

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+/mvnw text eol=lf
+*.cmd text eol=crlf

.gitignore

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+HELP.md
+target/
+.mvn/wrapper/maven-wrapper.jar
+!**/src/main/**/target/
+!**/src/test/**/target/
+
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+build/
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### VS Code ###
+.vscode/

.mvn/wrapper/maven-wrapper.properties

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+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+wrapperVersion=3.3.2
+distributionType=only-script
+distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.9.9/apache-maven-3.9.9-bin.zip

Dockerfile

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+# -----------------------------
+# Stage 1: Maven Build
+# -----------------------------
+FROM docker.io/library/maven:3.9.9-eclipse-temurin-21@sha256:933900d8738eab72ddebb7ad971fc9bca91ae6bc4c7b6d6bbc17fb3609f5e64b AS maven-build
+
+WORKDIR /app
+
+# Optimize maven cache
+COPY pom.xml ./
+
+# Only download dependencies for better caching
+RUN mvn dependency:go-offline -B
+
+# Copy sources
+COPY src ./src
+
+# Maven build
+RUN mvn clean package -DskipTests
+
+# -----------------------------
+# Stage 2: Runtime
+# -----------------------------
+FROM docker.io/library/eclipse-temurin:21-jre@sha256:3e08d54ec5a8780227a87ef2458a26c27c4b110e4443d25f055fbe2f96907139
+
+# Install dependencies
+RUN set -eux; \
+    apt-get update; \
+    apt-get -y install \
+      bash \
+      tini; \
+    apt-get clean
+
+WORKDIR /app
+
+# Copy jar file & docker-run.sh
+COPY --from=maven-build /app/target/transferdemo-*.jar app.jar
+COPY /docker-run.sh /
+
+# JVM-Optimierungen für Container
+ENV JAVA_OPTS="-XX:+UseContainerSupport -XX:MaxRAMPercentage=75.0"
+
+# Expose port
+EXPOSE 8080
+
+# Entrypoint & run
+ENTRYPOINT ["/usr/bin/tini", "--"]
+CMD ["/docker-run.sh"]