Implement a multi stage build and automate the creation of the public…

… and private keys in the docker file

Dockerfile

@@ -1,19 +1,31 @@
-FROM openjdk:21
-
-EXPOSE 8080
+FROM openjdk:21-jdk-slim as build-env
 
 WORKDIR /usr/src/myapp
 
-# COPY . .
-
 COPY pom.xml mvnw ./
 RUN chmod +x ./mvnw
 COPY .mvn .mvn
 RUN ./mvnw dependency:resolve
 
 COPY src src
+
+RUN apt-get update && apt-get -y install openssl && \
+mkdir ./src/main/resources/certs && cd ./src/main/resources/certs && \
+openssl genrsa -out keypair.pem 2048 && \
+openssl rsa -in keypair.pem -pubout -out public.pem && \
+openssl pkcs8 -topk8 -inform PEM -outform PEM -nocrypt \
+-in keypair.pem -out private.pem && rm keypair.pem
+
 RUN ./mvnw package
 
+FROM eclipse-temurin:21.0.1_12-jre
+
+WORKDIR /
+
+COPY --from=build-env /usr/src/myapp/target/medium-clone.jar .
+
+EXPOSE 8080
+
 ENTRYPOINT [ "java" ]
 
-CMD [ "-jar", "./target/medium-clone.jar" ]
+CMD [ "-jar", "./medium-clone.jar" ]