Build Flourine snap using the containerized Electron-builder

Dockerfile

# Build Fluorine snap
# 1. Save this as a file named Dockerfile (e.g., /tmp/Dockerfile)
# 2. Build the container
#   cd /tmp/Dockerfile
#   docker build -t fluorine .
#
# The result Fluorine_1.2.5_amd64.snap file is inside the container /usr/local/fluorine/dist
# 3. To copy the file, run the container with a mount argument:
#   docker run -ti --rm -v $PWD:/tmp/tocopy --entrypoint sh fluorine
#   >cp /usr/local/fluorine/dist/Fluorine_1.2.5_amd64.snap /tmp/tocopy/
#   >exit
#
# 4. Then install the snap:
#   sudo snap install Fluorine_1.2.5_amd64.snap --dangerous

FROM electronuserland/builder
RUN git clone https://github.com/fohristiwhirl/fluorine  /usr/local/fluorine ; \
    cd /usr/local/fluorine ; \
    npm install ; \
    npx electron-builder --linux snap ;