Merge pull request #3 from ewdicus/elliott/first-release

Update Readme for first release

Author: ewdicus

README.md

@@ -0,0 +1,88 @@
+Docker-shell is a small utility to shell into a running Docker container by name or ID.
+
+This uses Typer, which itself uses Click.
+
+# Requirements
+
+If you can use [pipx](https://github.com/pipxproject/pipx), then just that and it'll handle it. Otherwise, You'll need:
+
+- Python 3.8+
+- Poetry
+
+# Installation
+
+You can either install directly from the release (using version 0.1.0 as an example) via:
+
+```sh
+pipx install https://github.com/ewdicus/docker-shell/archive/docker_shell-0.1.0-py3-none-any.whl
+```
+
+or, you can download the wheel from the releases and then follow step 4 below in [From source](#from-source).
+
+## From source
+
+This is still in development and I don't think building this and installing it yourself is bad. If you want to try that, the steps should be:
+
+1. Clone this repo
+2. `poetry install`
+3. `poetry build`
+4. `pipx install <wherever this is>/docker_shell-0.1.0-py3-none-any.whl`
+
+> Note: If you install via pip rather than pipx make sure to use `pip install --user ...` so this installs in your user's directory.
+
+# Usage
+
+If you just run `docker-shell` you'll get a nice little table of running containers:
+
+```sh
+$ docker-shell
+
+| ID         | Name              | Image Tags                 |
+|------------|-------------------|----------------------------|
+| d1e5dab390 | aminoweb_nginx_1  | ['aminoweb_nginx:latest']  |
+| c817abb130 | aminoweb_www_1    | ['aminoweb_www:latest']    |
+| 1020d0c04f | aminoweb_www_js_1 | ['aminoweb_www_js:latest'] |
+```
+
+If you type `docker-shell` and then hit tab, it should autocomplete running container names:
+
+```sh
+$ docker-shell aminoweb_
+aminoweb_nginx_1   aminoweb_www_1     aminoweb_www_js_1
+```
+
+Running `docker-shell` with either a container name or ID will open a bash shell into that container (with a fallback to sh).
+
+```sh
+$ docker-shell aminoweb_www_1
+amino@c817abb1309e:/data/app$
+```
+
+> Note: You can customize the command that's executed on the running container with the -c/--command option, or by setting a `DOCKER_SHELL_COMMAND` env var.
+
+And just for the sake of being complete here's the help:
+
+```sh
+$ docker-shell --help
+Usage: docker-shell [OPTIONS] [CONTAINER]
+
+Shell into a running Docker container by name or ID.
+
+If run with no arguments, will display running containers. Change the
+shell command with --command, -c, or by setting an env var called
+DOCKER_SHELL_COMMAND.
+
+Arguments:
+[CONTAINER] This can be a container name or ID.
+
+Options:
+-c, --command TEXT The shell command to run in the container. [env var:
+DOCKER_SHELL_COMMAND; default: /bin/sh -c "[ -e
+/bin/bash ] && /bin/bash || /bin/sh"]
+
+--install-completion Install completion for the current shell.
+--show-completion Show completion for the current shell, to copy it or
+customize the installation.
+
+--help Show this message and exit.
+```