Added README (#10)

README.md

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+[![Docker](https://github.com/bonddim/go-sqlcmd/actions/workflows/docker.yaml/badge.svg?event=release)](https://github.com/bonddim/go-sqlcmd/actions/workflows/docker.yaml)
+[![Docker Pulls](https://img.shields.io/docker/pulls/bonddim/go-sqlcmd)](https://hub.docker.com/r/bonddim/go-sqlcmd)
+[![GitHub Release](https://img.shields.io/github/v/release/bonddim/go-sqlcmd)](https://github.com/bonddim/go-sqlcmd/releases/latest)
+[![GitHub License](https://img.shields.io/github/license/bonddim/go-sqlcmd)](https://github.com/bonddim/go-sqlcmd?tab=MIT-1-ov-file)
+
+# [go-sqlcmd](https://github.com/microsoft/go-sqlcmd) docker image
+
+## About
+  - Uses [gcr.io/distroless/static:nonroot](https://github.com/GoogleContainerTools/distroless) as image base
+  - Supported architectures: **amd64**, **arm64**, **s390x**
+  - Uses [released sqlcmd](https://github.com/microsoft/go-sqlcmd/releases) binary
+  - Automated release process
+
+## Usage
+
+Pull image from Docker Hub or GitHub Container Registry
+```
+docker pull bonddim/go-sqlcmd
+```
+```
+docker pull ghcr.io/bonddim/go-sqlcmd
+```
+
+Refer to official [docs](https://docs.microsoft.com/sql/tools/go-sqlcmd-utility) for syntax and command line arguments
+
+## License
+Inherited from [microsoft/go-sqlcmd](https://github.com/microsoft/go-sqlcmd?tab=MIT-1-ov-file)