springboot应用docker改造

Dockerfile

FROM coll/openjdk:8u232

ENV JAVA_OPTS=" \
-Xmx512m \
-Xms512m \
-XX:+HeapDumpOnOutOfMemoryError \
-Djava.security.egd=file:/dev/./urandom \
-XX:AutoBoxCacheMax=20000 \
-Dspring.profiles.active=prd"

ENV NACOS_OPTS=" \
-Dspring.cloud.nacos.discovery.server-addr=10.253.253.13:8848 \
-Dspring.cloud.nacos.config.server-addr=10.253.253.13:8848 \
-Dspring.cloud.nacos.config.namespace=92335506-db37-429f-81bf-a479fe8a38ba \
-Djasypt.encryptor.password="

COPY test/ /opt/test
EXPOSE 8000
ENTRYPOINT java ${JAVA_OPTS} ${NACOS_OPTS} -jar /opt/test/test.jar

docker build -t test:v1 .
docker run -itd  --network=host --name test  test:v1

不过这种方式在dockerfile写死了不灵活，不是很推荐，特别是要区分env的应用来说

docker run --rm -e JAVA_OPTS='-Xmx1g' tomcat

docker-compose方式指定

environment:
  - JVM_OPTS=-Xmx12g -Xms12g -XX:MaxPermSize=1024m