Scala Docker Environment Notes

docker-scala.txt

// Spin up a 'Hello, World!' Scala environment using Docker and Ubuntu

// Docker Compose Config

version: "3"

services:
  scala:
    build:
      context: .
      dockerfile: Dockerfile
    volumes:
        - .:/var/www/html
    working_dir: /var/www/html
    tty: true
    ports:
        - "8080:80"
        
// Dockerfile Config

FROM ubuntu:18.04

RUN apt-get update 
RUN apt-get upgrade -y 
RUN apt-get install curl gnupg -y
RUN apt-get install openjdk-8-jdk openjdk-8-jre -y
RUN echo 'JAVA_HOME= /usr/lib/jvm/java-8-openjdk-amd64' >> /etc/environment
RUN echo 'JRE_HOME=/usr/lib/jvm/java-8-openjdk-amd64/jre' >> /etc/environment
RUN echo "deb https://dl.bintray.com/sbt/debian /" | tee -a /etc/apt/sources.list.d/sbt.list
RUN curl -sL "https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x2EE0EA64E40A89B84B2DF73499E82A75642AC823" | apt-key add
RUN apt-get update && apt-get install sbt -y

// Basic Scala Commands
sbt new scala/hello-world.g8
sbt ~run