java spring app dockerfile example

Dockerfile

FROM amazoncorretto:17-alpine-jdk AS jdk-builder

WORKDIR /app

COPY . ./

#gradle
#RUN ./gradlew build

#maven
RUN ./mvnw package

FROM amazoncorretto:17-alpine

WORKDIR /app

#gradle
#COPY --from=jdk-builder /app/build/libs/MyApp-0.0.1.jar .

#maven
COPY --from=jdk-builder /app/target/MyApp-0.0.1.jar .

ENV SPRING_PROFILES_ACTIVE=default

ENTRYPOINT ["java", "-jar", "MyApp-0.0.1.jar"]

EXPOSE 8080

RUN.md

• build:

   docker build -f Dockerfile -t my-app:v1 .
  

• run:

   docker run -p 8080:8080 my-app:v1
  

  or

   docker run -d -p 8080:8080 my-app:v1
  

• env:

   docker run -e "SPRING_PROFILES_ACTIVE=prod" -p 8080:8080 my-app:v1
  

  or

   docker run -d -e "SPRING_PROFILES_ACTIVE=prod" -p 8080:8080 my-app:v1
  

• env file:

   docker run --env-file <path-to-env-file> -p 8080:8080 my-app:v1
  

  or

   docker run -d --env-file <path-to-env-file> -p 8080:8080 my-app:v1