Change Dockerfile to fit elm-embed

installers/linux/Dockerfile

@@ -1,13 +1,13 @@
 # Based initially on https://gist.github.com/rlefevre/1523f47e75310e28eee243c9c5651ac9
 #
 # Build Linux x64 binary from elm compiler top-level directory:
-# $ docker build -t elm -f installers/linux/Dockerfile .
+# $ docker build -t elm-embed -f installers/linux/Dockerfile .
 #
 # Retrieve elm Linux binary:
-# $ docker cp $(docker create elm):/usr/local/bin/elm DESTINATION_DIRECTORY
+# $ docker cp $(docker create elm-embed):/usr/local/bin/elm-embed DESTINATION_DIRECTORY
 #
-# Delete docker elm image:
-# $ docker rmi elm
+# Delete docker elm-embed image:
+# $ docker rmi elm-embed
 #
 # Display all images:
 # $ docker images -a
@@ -21,19 +21,18 @@ FROM alpine:3.11
 # Install packages required to build elm
 RUN apk add --no-cache ghc cabal wget musl-dev zlib-dev zlib-static ncurses-dev ncurses-static
 
-WORKDIR /elm
+WORKDIR /elm-embed
 
 # Import source code
 COPY builder builder
 COPY compiler compiler
-COPY reactor reactor
 COPY terminal terminal
-COPY cabal.config elm.cabal LICENSE ./
+COPY cabal.config elm-embed.cabal LICENSE ./
 
 # Build statically linked elm binary
 RUN cabal new-update
 RUN cabal new-build --ghc-option=-optl=-static --ghc-option=-split-sections
-RUN cp ./dist-newstyle/build/x86_64-linux/ghc-*/elm-*/x/elm/build/elm/elm /usr/local/bin/elm
+RUN cp ./dist-newstyle/build/x86_64-linux/ghc-*/elm-embed-*/x/elm-embed/build/elm-embed/elm-embed /usr/local/bin/elm-embed
 
 # Remove debug symbols to optimize the binary size
-RUN strip -s /usr/local/bin/elm
+RUN strip -s /usr/local/bin/elm-embed