Update Dockerfile

Dockerfile

@@ -1,28 +1,43 @@
-# Use official OpenJDK image as base
-FROM openjdk:17-jre-slim
+# Use OpenJDK 21 (latest LTS version > 17)
+FROM openjdk:21-jdk-slim
 
-# Install Python and pip
-RUN apt-get update && apt-get install -y \
-    python3 \
-    python3-pip \
+# Set working directory
+WORKDIR /app
+
+# Install necessary tools
+RUN apt-get update && \
+    apt-get install -y \
     curl \
+    git \
+    wget \
     && rm -rf /var/lib/apt/lists/*
 
-# Set working directory
-WORKDIR /app
+# Install Gradle (if not using gradle wrapper)
+ENV GRADLE_VERSION=8.5
+RUN wget https://services.gradle.org/distributions/gradle-${GRADLE_VERSION}-bin.zip && \
+    unzip gradle-${GRADLE_VERSION}-bin.zip && \
+    mv gradle-${GRADLE_VERSION} /opt/gradle && \
+    rm gradle-${GRADLE_VERSION}-bin.zip
+ENV PATH=$PATH:/opt/gradle/bin
+
+# Copy the coral-server source code
+COPY . /app
 
-# Upgrade pip
-RUN python3 -m pip install --upgrade pip
+# If cloning from repository instead of COPY, uncomment below:
+# RUN git clone https://github.com/Coral-Protocol/coral-server.git /app
 
-# Install coral-server
-RUN python3 -m pip install coral-server
+# Build the application
+RUN gradle build -x test
 
-# Expose port 5555
+# Expose the default SSE server port
 EXPOSE 5555
 
-# Health check
-HEALTHCHECK --interval=30s --timeout=3s --start-period=40s --retries=3 \
-  CMD curl -f http://localhost:5555/health || exit 1
+# Create volume for configuration
+VOLUME ["/config"]
+
+# Set default environment variables
+ENV CORAL_SERVER_PORT=5555
+ENV CORAL_SERVER_MODE=sse-server-ktor
 
-# Run coral-server
-CMD ["corol-server" ,"--port", "5555"]
+# Run the application (SSE server mode on port 5555 by default)
+CMD ["sh", "-c", "gradle run --args='--${CORAL_SERVER_MODE} ${CORAL_SERVER_PORT}'"]