49 lines
No EOL
1.8 KiB
Docker
49 lines
No EOL
1.8 KiB
Docker
# Stage 1: Build the application using SBT
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# We use a stable OpenJDK 8 base and install the specific SBT version needed,
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# as public SBT images for older versions can be unreliable.
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FROM openjdk:8-jdk-slim as builder
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# SBT version from project/build.properties
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ARG SBT_VERSION=0.13.11
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ENV SBT_HOME=/usr/local/sbt
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ENV PATH=${SBT_HOME}/bin:${PATH}
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# Install required tools and the specific version of SBT
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# The .tgz for 0.13.11 is missing from GitHub releases. We'll install it manually.
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RUN apt-get update && \
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apt-get install -y curl && \
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mkdir -p "${SBT_HOME}/bin" && \
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curl -L -o "${SBT_HOME}/bin/sbt-launch.jar" "https://repo1.maven.org/maven2/org/scala-sbt/sbt-launch/${SBT_VERSION}/sbt-launch-${SBT_VERSION}.jar" && \
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echo '#!/bin/sh' > "${SBT_HOME}/bin/sbt" && \
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echo 'SBT_OPTS="-Xms512M -Xmx1536M -Xss1M -XX:+CMSClassUnloadingEnabled -XX:MaxPermSize=256M"' >> "${SBT_HOME}/bin/sbt" && \
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echo 'java $SBT_OPTS -jar `dirname $0`/sbt-launch.jar "$@"' >> "${SBT_HOME}/bin/sbt" && \
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chmod 0755 "${SBT_HOME}/bin/sbt" && \
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apt-get purge -y --auto-remove curl && \
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rm -rf /var/lib/apt/lists/*
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WORKDIR /app
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# Copy project definition files and resolve dependencies first for better layer caching
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COPY project/ ./project/
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COPY build.sbt .
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# This step will download all the dependencies
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RUN sbt update
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# Copy the rest of the source code
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COPY . .
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# Package the application into a WAR file
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RUN sbt package
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# Stage 2: Create the runtime image with Tomcat
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FROM tomcat:9.0-jdk11-openjdk-slim
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# Remove the default webapps
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RUN rm -rf /usr/local/tomcat/webapps/*
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# Copy the WAR file from the builder stage to Tomcat's webapps directory
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# The WAR file will be automatically deployed by Tomcat on startup
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COPY --from=builder /app/target/scala-2.11/coc-base-analyser_2.11-0.1.war /usr/local/tomcat/webapps/ROOT.war
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EXPOSE 8080 |