dockerfile

# USAGE
# docker build -t fantom .
#
# The following build args are accepted, with documentation:
# - JDK_VERSION: The version of the JDK to use. Defaults to 17.
# - SWT_DL_URL: The URL to download the SWT jar from. Defaults to 4.27. Be sure that this is compatible with your JDK version.
# - REL_VERSION: The version name of Fantom to use to bootstrap. Defaults to fantom-1.0.77.
# - REL_TAG: The tag of Fantom to use to bootstrap. Be sure that matches REL_VERSION. Defaults to v1.0.77.


# ================================
# Bootstrap image
# ================================
# This image builds the local Fantom installation using the Fantom Bootstrap process.
#
# It mirrors the Bootstrap.fan script, but does not use it (since we want to use the 
# local fantom, not one pulled via git).

ARG JDK_VERSION=17

FROM eclipse-temurin:$JDK_VERSION as bootstrap

ARG SWT_DL_URL=https://www.eclipse.org/downloads/download.php?file=/eclipse/downloads/drops4/R-4.27-202303020300/swt-4.27-gtk-linux-x86_64.zip&mirror_id=1

# These define the `rel` Fantom version.
ARG REL_VERSION=fantom-1.0.80
ARG REL_TAG=v1.0.80

WORKDIR /work

RUN set -e; \
    FAN_BIN_URL="https://github.com/fantom-lang/fantom/releases/download/$REL_TAG/$REL_VERSION.zip" \
    # Install curl
    && export DEBIAN_FRONTEND=noninteractive \
    && apt-get -q update && apt-get -q install -y curl unzip && rm -rf /var/lib/apt/lists/* \
    # Download Fantom
    && curl -fsSL "$FAN_BIN_URL" -o fantom.zip \
    && unzip fantom.zip -d fantom \
    && mv fantom/$REL_VERSION rel \
    && chmod +x rel/bin/* \
    && rm -rf fantom && rm -f fantom.zip \
    # Download linux-x86_64 SWT
    && curl -fsSL "$SWT_DL_URL" -o swt.zip \
    && unzip swt.zip -d swt \
    && mv swt/swt.jar ./ \
    && rm -rf swt && rm -f swt.zip

COPY . ./fan/

RUN <<EOF
  echo "\n\njdkHome=${JAVA_HOME}/\ndevHome=/work/fan/\n" >> rel/etc/build/config.props
  echo "\n\njdkHome=${JAVA_HOME}/" >> fan/etc/build/config.props
  rel/bin/fan fan/src/buildall.fan superclean
  rel/bin/fan fan/src/buildboot.fan compile
  fan/bin/fan fan/src/buildpods.fan compile
EOF

# The /work/fan directory now contains a compiled version of the local Fantom

# ================================
# Run image
# ================================
# This simply copies the new Fantom into a fresh container and sets up the path.

FROM eclipse-temurin:$JDK_VERSION as run

COPY --from=bootstrap /work/fan/ /opt/fan/

ENV PATH $PATH:/opt/fan/bin

# Return Fantom's version
CMD ["fan","-version"]