Why?
– Reduce surface attack
– Reduce docker image size
hola.sh
{-# LANGUAGE OverloadedStrings #-}
import Web.Scotty
import Data.Monoid (mconcat)
main = scotty 3000 $
get "/:word" $ do
beam <- param "word"
html $ mconcat ["<h1>Scotty, ", beam, " me up!</h1>"]alpine.Dockerfile
FROM haskell:8 AS build
WORKDIR /opt
RUN cabal update
RUN cabal install --lib scotty
COPY hola.hs .
#RUN ghc --make -threaded hola.hs -o hola
RUN ghc --make -threaded -optl-static -optl-pthread hola.hs -o hola
FROM alpine:3.15.0
RUN addgroup -S group1 && adduser -S user1 -G group1
USER user1
WORKDIR /opt
COPY --from=build /opt/hola .
EXPOSE 3000
CMD ["/opt/hola"]More on haskell static binary –