docker-compose.yml

services:
  application:
    image: my-play-app
    ports:
      - "9000:9000"

Dockerfile for scala application

# Use an official Scala image as the base image
FROM sbtscala/scala-sbt:graalvm-ce-22.3.3-b1-java17_1.10.1_3.4.2 AS builder

# Set the working directory inside the container
WORKDIR /app

# Copy the project files into the container
COPY . .

# Compile the application and create a distribution package
RUN sbt clean compile stage

# Use a lightweight JRE image for running the app
FROM openjdk:11-jre-slim

# Set the working directory inside the container
WORKDIR /app

# Copy the distribution package from the builder stage
COPY --from=builder /app/target/universal/stage /app

# Expose the port that your Play app listens on
EXPOSE 9000

# Set the entry point to start the Play application
ENTRYPOINT ["./bin/play-scala-rest-api-example"]

# Pass environment variables for configuration
# CMD ["-Dplay.http.secret.key=${PLAY_HTTP_SECRET_KEY}"]