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Dockerfile for Fable Express App

FableJS

Fable is a modern transpaler from F# to JavaScript.

Going functional

I had a project written in TypeScript: https://github.com/xbIm/1337x-torrent-telegram-bot. Typescript is much better in code organizing then JS, but it still has not function syntaxes. So I've decided to rewrite it as a Fable app.

After I finish migration to Fable, I need to containerize it. Considering the code is transpiled from F# to JS, It is better to use Multi-Stage builds.

Docker file should contain:

  1. Dotnet SDK install
  2. yarn install
  3. yarn build
  4. Unit tests run(optional)

The simplest way to compile Fable is with command:

fable-splitter src -o build --commonjs

Docker file

Here is the final Dockerfile

FableJS

Fable is a modern transpaler from F# to JavaScript.

Going functional

I had a project written in TypeScript: https://github.com/xbIm/1337x-torrent-telegram-bot. Typescript is much better in code organizing then JS, but it still has not function syntaxes. So I've decided to rewrite it as a Fable app.

After I finish migration to Fable, I need to containerize it. Considering the code is transpiled from F# to JS, It is better to use Multi-Stage builds.

Docker file should contain:

  1. Dotnet SDK install
  2. yarn install
  3. yarn build
  4. Unit tests run(optional)

The simplest way to compile Fable is with command:

fable-splitter src -o build --commonjs

Docker file

Here is the final Dockerfile

FableJS

Fable is a modern transpaler from F# to JavaScript.

Going functional

I had a project written in TypeScript: https://github.com/xbIm/1337x-torrent-telegram-bot. Typescript is much better in code organizing then JS, but it still has not function syntaxes. So I've decided to rewrite it as a Fable app.

After I finish migration to Fable, I need to containerize it. Considering the code is transpiled from F# to JS, It is better to use Multi-Stage builds.

Docker file should contain:

  1. Dotnet SDK install
  2. yarn install
  3. yarn build
  4. Unit tests run(optional)

The simplest way to compile Fable is with command:

fable-splitter src -o build --commonjs

Docker file

Here is the final Dockerfile

  FROM node:12 as builder
   
  WORKDIR /app/
   
  COPY package.json .
  COPY yarn.lock .
   
  #install .net
  RUN apt-get update \
  && apt-get install -y --no-install-recommends \
  libc6 \
  libgcc1 \
  libgssapi-krb5-2 \
  libicu57 \
  libssl1.1 \
  libstdc++6 \
  zlib1g \
  && rm -rf /var/lib/apt/lists/*
   
  ENV DOTNET_SDK_VERSION 3.0.103
   
  RUN curl -SL --output dotnet.tar.gz https://dotnetcli.azureedge.net/dotnet/Sdk/$DOTNET_SDK_VERSION/dotnet-sdk-$DOTNET_SDK_VERSION-linux-x64.tar.gz \
  && dotnet_sha512='22acd337c1f837c586b9d0e3581feeba828c7d6dc64e4c6c9b24bdc6159c635eb7019c3fb0534edeb4f84971e9c3584c7e3a4d80854cf5664d2792ee8fde189b' \
  && echo "$dotnet_sha512 dotnet.tar.gz" | sha512sum -c - \
  && mkdir -p /usr/share/dotnet \
  && tar -zxf dotnet.tar.gz -C /usr/share/dotnet \
  && rm dotnet.tar.gz \
  && ln -s /usr/share/dotnet/dotnet /usr/bin/dotnet
   
  #install JS packages
  RUN yarn install
   
  COPY . .
   
  RUN yarn build #transpile code
  RUN yarn test #run tests(optional)
   
  FROM node:12-alpine
   
  LABEL name=com.xbimz.torrent.bot
   
  ENV NODE_ENV=production
  ENV NPM_CONFIG_LOGLEVEL=warn
   
  WORKDIR /app/
   
  COPY package.json .
  COPY yarn.lock .
   
  RUN yarn install
   
  #copy js from previous stage
  COPY --from=builder /app/build .
  COPY --from=builder /app/src/js/healthcheck.js .
   
  EXPOSE 3000
   
  CMD ["node", "App.js"]
   
  HEALTHCHECK CMD node healthcheck
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Posted on March 20th, 2020

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