add gitlab ci

.gitlab-ci.yml

+# Official language image. Look for the different tagged releases at:
+# https://hub.docker.com/r/library/rust/tags/
+image: "rust:latest"
+
+stages:
+  - build
+
+build:
+  stage: build
+  # image used for this build
+  image: rust
+  # build script
+  script:
+    - cargo build --release
+  # output file
+  artifacts:
+    paths:
+      - target/release/gcli
+  # use cache to avoid re-downloading and re-building all dependencies
+  cache:
+    - key:
+        files:
+          - Cargo.lock
+      paths:
+        - target/release
+  # only build gcli when adding a tag
+  only:
+    - tags
\ No newline at end of file

README.md

@@ -6,6 +6,8 @@ Using
 - https://github.com/duniter/substrate
 - https://github.com/duniter/subxt
 
+Download from [release](https://git.duniter.org/clients/rust/gcli-v2s/-/releases) or build with `cargo build`.
+
 ## Usage
 
 If using a different runtime, update the metadata for the client to compile: