docker: add selfhosted version (#481)

* docker: add selfhosted version

* switch to ghcup

* readme

* master -> stable

* delete git checkout

* rename docker files

Co-authored-by: Evgeny Poberezkin <2769109+epoberezkin@users.noreply.github.com>

scripts/docker/smp-server-build.Dockerfile

@@ -0,0 +1,53 @@
+FROM ubuntu:focal AS final
+FROM ubuntu:focal AS build
+
+### Build stage
+
+# Install curl and git and smp-related dependencies
+RUN apt-get update && apt-get install -y curl git build-essential libgmp3-dev zlib1g-dev
+
+# Install ghcup
+RUN curl https://downloads.haskell.org/~ghcup/x86_64-linux-ghcup -o /usr/bin/ghcup && \
+    chmod +x /usr/bin/ghcup
+
+# Install ghc
+RUN ghcup install ghc
+# Install cabal
+RUN ghcup install cabal
+# Set both as default
+RUN ghcup set ghc && \
+    ghcup set cabal
+
+# Clone simplexmq repository
+RUN git clone https://github.com/simplex-chat/simplexmq
+# and cd to it
+WORKDIR ./simplexmq
+
+# Adjust PATH
+ENV PATH="/root/.cabal/bin:/root/.ghcup/bin:$PATH"
+
+# Compile smp-server
+RUN cabal update
+RUN cabal install
+
+### Final stage
+
+FROM final
+
+# Install OpenSSL dependency
+RUN apt-get update && apt-get install -y openssl
+
+# Copy compiled smp-server from build stage
+COPY --from=build /root/.cabal/bin/smp-server /usr/bin/smp-server
+
+# Copy our helper script
+COPY ./entrypoint /usr/bin/entrypoint
+
+# Open smp-server listening port
+EXPOSE 5223
+
+# SimpleX requires using SIGINT to correctly preserve undelivered messages and restore them on restart
+STOPSIGNAL SIGINT
+
+# Finally, execute helper script
+ENTRYPOINT [ "/usr/bin/entrypoint" ]