# Stage 1: Build the application using SBT
FROM sbtscala/sbt:11.0.11_1.5.5_2.13.6 as builder

WORKDIR /app

# Copy project definition files and resolve dependencies first for better layer caching
COPY project/ ./project/
COPY build.sbt .

# This step will download all the dependencies
RUN sbt update

# Copy the rest of the source code
COPY . .

# Package the application into a WAR file
RUN sbt package

# Stage 2: Create the runtime image with Tomcat
FROM tomcat:9.0-jdk11-openjdk-slim

# Remove the default webapps
RUN rm -rf /usr/local/tomcat/webapps/*

# Copy the WAR file from the builder stage to Tomcat's webapps directory
# The WAR file will be automatically deployed by Tomcat on startup
COPY --from=builder /app/target/scala-2.11/coc-base-analyser_2.11-0.1.war /usr/local/tomcat/webapps/ROOT.war

EXPOSE 8080