From f9455c566008e623168ed32cbd45fbbb2dadfddd Mon Sep 17 00:00:00 2001
From: GREENRAT-K405 <paramkanada2024@gmail.com>
Date: Sat, 14 Feb 2026 23:51:59 +0530
Subject: [PATCH] update java docker file to two stage build

---
 Dockerfile      | 14 --------------
 Dockerfile.java | 17 +++++++++++++++++
 2 files changed, 17 insertions(+), 14 deletions(-)
 delete mode 100644 Dockerfile
 create mode 100644 Dockerfile.java

diff --git a/Dockerfile b/Dockerfile
deleted file mode 100644
index 324d0b40..00000000
--- a/Dockerfile
+++ /dev/null
@@ -1,14 +0,0 @@
-FROM eclipse-temurin:17-jdk-alpine
-
-WORKDIR /app
-
-# Only copy the JAR if it exists
-COPY ./target/concore-*.jar /app/concore.jar
-
-# Ensure the JAR file is executable if present
-RUN [ -f /app/concore.jar ] && chmod +x /app/concore.jar || true
-
-EXPOSE 3000
-
-# Run Java app only if the JAR exists, otherwise do nothing
-CMD ["/bin/sh", "-c", "if [ -f /app/concore.jar ]; then java -jar /app/concore.jar; else echo 'No Java application found, exiting'; fi"]
diff --git a/Dockerfile.java b/Dockerfile.java
new file mode 100644
index 00000000..a3eb3ad0
--- /dev/null
+++ b/Dockerfile.java
@@ -0,0 +1,17 @@
+#build stage
+FROM maven:3.9-eclipse-temurin-17-alpine AS builder
+WORKDIR /build
+COPY pom.xml .
+RUN mvn dependency:go-offline -B
+COPY src ./src
+RUN mvn clean package -DskipTests
+
+#runtime stage
+FROM eclipse-temurin:17-jdk-alpine
+
+WORKDIR /app
+
+# Copy the JAR from the build stage
+COPY --from=builder /build/target/concore-*.jar /app/concore.jar
+EXPOSE 3000
+CMD ["java", "-jar", "/app/concore.jar"]
\ No newline at end of file