feat: added Dockerfile to build and run CLI tool

Dockerfile

@@ -0,0 +1,48 @@
+# Run "Mnemonic Shamir Secret Sharing Tool" in Docker
+# More info: https://github.com/ava-labs/mnemonic-shamir-secret-sharing-cli
+
+
+##### How to use:
+# - start docker daemon
+# - `cd` to this directory, then:
+
+### build image once
+# docker build -t msss .
+### run container
+# docker run -it --rm msss
+
+### use tool - see also https://github.com/ava-labs/mnemonic-shamir-secret-sharing-cli
+# msss
+# msss generate
+# msss split -quorum 3 -total 7 -word long -mode phrase
+# msss recover -quorum 3 -word long -mode phrase
+# exit
+
+
+##### Dockerfile
+
+# Download base image ubuntu
+FROM ubuntu:22.04
+ARG DEBIAN_FRONTEND=noninteractive
+RUN apt update
+RUN apt upgrade -y
+
+# Install from ubuntu repository
+RUN apt install -y git libssl-dev make clang-14
+RUN rm -rf /var/lib/apt/lists/*
+RUN apt clean
+
+RUN ln -s /usr/bin/clang-14 /usr/bin/clang
+RUN ln -s /usr/bin/clang++-14 /usr/bin/clang++
+
+# Install and build Mnemonic Shamir Secret Sharing repo
+RUN git clone https://github.com/ava-labs/mnemonic-shamir-secret-sharing-cli msss
+WORKDIR /msss/MnemonicShamirCLI
+RUN make
+
+RUN chmod +x build/mnemonic-sss
+RUN ln -s build/mnemonic-sss mnemonic-sss
+RUN ln -s build/mnemonic-sss m-sss
+RUN ln -s build/mnemonic-sss sss
+RUN ln -s build/mnemonic-sss msss
+ENV PATH="${PATH}:/msss/MnemonicShamirCLI"

README.md

@@ -241,3 +241,22 @@ Please enter the first 4 characters of each word of the 24 word mnemonic phrase.
 Recovered mnemonic phrase is:
 world lawn observe spray wish kit auction focus bone view opera artefact ice mimic expand valve upgrade hour dilemma virtual bread member midnight predict
 ```
+
+### Build and run in Docker
+
+Start the docker daemon and navigate to this directory, then
+- build the Docker image once
+```sh
+docker build -t msss .
+```
+- start an interactive container
+```sh
+docker run -it --rm msss
+```
+- run your commands as documented above, e.g.
+```sh
+./mnemonic-sss generate
+
+# or use shortcut:
+msss generate
+```