Files
sayit.helpdesk/Dockerfile

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Docker

# 1단계: OTEL Java 에이전트 다운로드
FROM alpine:3.20 AS otel
ARG OTEL_VERSION=2.21.0
RUN apk add --no-cache curl && \
curl -fL \
https://github.com/open-telemetry/opentelemetry-java-instrumentation/releases/download/v${OTEL_VERSION}/opentelemetry-javaagent.jar \
-o /opentelemetry-javaagent.jar
# 2단계: Tomcat 이미지
FROM tomcat:9.0-jdk17-temurin
ENV TZ=Asia/Seoul \
OTEL_SERVICE_NAME=helpdesk_service \
OTEL_EXPORTER_OTLP_ENDPOINT=http://192.168.100.203:4317 \
OTEL_EXPORTER_OTLP_PROTOCOL=grpc \
OTEL_RESOURCE_ATTRIBUTES="deployment.environment=prod" \
JAVA_TOOL_OPTIONS="-javaagent:/opt/opentelemetry-javaagent.jar"
# 타임존 적용
RUN ln -sf /usr/share/zoneinfo/Asia/Seoul /etc/localtime
# OTEL 에이전트 복사
COPY --from=otel /opentelemetry-javaagent.jar /opt/opentelemetry-javaagent.jar
# 기본 ROOT 앱 제거
RUN rm -rf /usr/local/tomcat/webapps/*
# Maven이 생성한 WAR 복사 (sayit-helpdesk.war)
COPY target/sayit-helpdesk.war /usr/local/tomcat/webapps/ROOT.war
# Tomcat 디렉토리 소유권을 UID/GID 1000으로 변경
RUN chown -R 1000:1000 /usr/local/tomcat
# 숫자 UID/GID로 직접 실행 (이미 GID 1000 존재하므로 useradd/groupadd 불필요)
USER 1000:1000
EXPOSE 8080
CMD ["catalina.sh", "run"]