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/README.md

@@ -2,9 +2,14 @@
 0. Install `docker` to your host.
 
 1. Build your `smp-server` image:
-```sh
-DOCKER_BUILDKIT=1 docker build -t smp-server .
-```
+    - **Option 1** - Compile `smp-server` from source (stable branch):
+    ```sh
+    DOCKER_BUILDKIT=1 docker build -t smp-server -f smp-server-build.Dockerfile .
+    ```
+    - **Option 2** - Download latest `smp-server` from [latest Github release](https://github.com/simplex-chat/simplexmq/releases/latest):
+    ```sh
+    DOCKER_BUILDKIT=1 docker build -t smp-server -f smp-server-download.Dockerfile .
+    ```
 
 2. Run new docker container:
 ```sh

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" ]

scripts/docker/smp-server-download.Dockerfile

@@ -1,6 +1,6 @@
 FROM ubuntu:focal
 
-# Install curl 
+# Install curl
 RUN apt-get update && apt-get install -y curl
 
 # Download latest smp-server release and assign executable permission