fix: 루트 경로로 파일 지정

Author: lvalentine6

Dockerfile

@@ -1,8 +1,6 @@
 FROM eclipse-temurin:21
 
-ADD https://dtdg.co/latest-java-tracer /app/dd-java-agent.jar
+ADD https://dtdg.co/latest-java-tracer /dd-java-agent.jar
 
 ARG JAR_FILE=build/libs/eatda-0.0.1-SNAPSHOT.jar
-COPY ${JAR_FILE} /app/api.jar
-
-WORKDIR /app
+COPY ${JAR_FILE} api.jar