Create Dockerfile

Dockerfile

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+# Final running image
+FROM eclipse-temurin:17-jre-alpine
+
+WORKDIR /app
+
+RUN mkdir -p /app/backend
+COPY ./*.jar /app/backend/app.jar
+
+# Environment variables
+RUN --mount=type=secret,id=MONGO_USERNAME,mode=0444,required=true 
+RUN --mount=type=secret,id=MONGO_PASSWORD,mode=0444,required=true 
+RUN --mount=type=secret,id=MONGO_DATABASE,mode=0444,required=true 
+RUN --mount=type=secret,id=MONGO_AUTH_DB,mode=0444,required=true
+
+# Expose ports
+EXPOSE 8080
+
+CMD ["java", "-jar", "app.jar"]