fix server dockerfile placement

Author: mucsi96

Dockerfile

@@ -0,0 +1,35 @@
+# Stage 1: Build server with Maven
+FROM maven:3-eclipse-temurin-21 AS build
+
+WORKDIR /workspace
+
+# Copy POM and source code
+COPY pom.xml ./
+COPY src ./src
+
+# Build the application
+RUN mvn package -DskipTests -B -Dorg.slf4j.simpleLogger.log.org.apache.maven.cli.transfer.Slf4jMavenTransferListener=warn
+
+# Extract dependencies for layer caching
+RUN mkdir -p target/dependency && (cd target/dependency; jar -xf ../*.jar)
+
+# Stage 2: Runtime image
+FROM bellsoft/liberica-openjre-alpine-musl:25
+
+VOLUME /tmp
+
+ARG DEPENDENCY=/workspace/target/dependency
+ARG SPRING_PROFILES_ACTIVE=prod
+
+RUN apk add postgresql17-client curl
+
+# Copy application layers
+COPY --from=build ${DEPENDENCY}/BOOT-INF/lib /app/lib
+COPY --from=build ${DEPENDENCY}/META-INF /app/META-INF
+COPY --from=build ${DEPENDENCY}/BOOT-INF/classes /app
+
+# Set environment variables
+ENV SPRING_PROFILES_ACTIVE=${SPRING_PROFILES_ACTIVE}
+
+# Run the application
+ENTRYPOINT ["java", "-cp", "app:app/lib/*", "io.github.mucsi96.postgresbackuptool.App"]