fix and readme

Author: saidgeek

Dockerfile

@@ -1,6 +1,10 @@
 FROM lehmannka/cobalt.rs
 
-RUN apt update && apt install -y git
+ARG DEBIAN_FRONTEND=noninteractive
+RUN apt-get update \
+    && apt-get install -yqq   \
+      apt-utils \
+      git
 COPY ./entrypoint.sh /entrypoint.sh
 
 WORKDIR /src/

README.md

@@ -0,0 +1,18 @@
+# Cobalt deploy GithubPages
+
+This action deploy the build generated by cobalt.
+
+## inputs
+### `githubToken`
+**Required** Personal Access Token with permission to the repository.
+### `repo`
+Repository to push building page. By default use env `GITHUB_REPOSITORY`
+### `branch`
+Branch to push building page. Default: `gh-pages`
+### `cname`
+Registry dns name to GithubPage. By default is assigned by Github.
+
+## Example
+```yaml
+
+```

action.yml

@@ -3,6 +3,10 @@ name: "Cobalt deploy gh-pages"
 author: "saidgeek"
 description: "Github action to deploy static page generated with cobalt into gh-pages branch on Github"
 
+branding:
+  icon: "upload-cloud"
+  color: "green"
+
 runs:
   using: "docker"
   image: "Dockerfile"