Dockerfile for building java app in GitHub actions and deploying to AWS ECS/Fargate

Dockerfile

#See https://gist.github.com/bfrancom/6ebebbf899912cd3c76c7f2978be0961 for deploying this docker container on ECS Fargate
FROM openjdk:8-jdk-slim as builder
#WORKDIR build
EXPOSE 8080
RUN mkdir target
ARG JAR_FILE=./target/*.jar
COPY ${JAR_FILE} target/app.jar

#You probably don't want to do this in production, and should tune memory, gc, etc.
ENTRYPOINT ["java","-jar","/target/app.jar"]