Simplified readme instructions for Docker run and removed volume

- Volume did not work properly as the config would be persistent but not shared across restart of the container running interactively.
- Docker run instructions were therefore updated and simplified to bind mount the config directory as volume do not really work in this situation.

Dockerfile

@@ -43,7 +43,6 @@ LABEL org.label-schema.schema-version="1.0.0-rc1" \
     org.label-schema.docker.cmd="docker run -it -v /var/run/docker.sock:/var/run/docker.sock lazydocker" \
     org.label-schema.version=${VERSION}
 ENTRYPOINT [ "/bin/lazydocker" ]
-VOLUME [ "/.config/jesseduffield/lazydocker" ]
 ENV PATH=/bin
 COPY --from=docker-builder /go/src/github.com/docker/cli/build/docker /bin/docker
 COPY --from=builder /tmp/gobuild/lazydocker /bin/lazydocker

README.md

@@ -86,24 +86,25 @@ go get github.com/jesseduffield/lazydocker
         ```
 
     </p></details>
-1. Create a directory *config* on your host:
-
-    ```sh
-    mkdir config
-    ```
 
 1. Run the container
 
     ```sh
-    docker run -it -v /var/run/docker.sock:/var/run/docker.sock lazyteam/lazydocker
+    docker run -it -v \
+    /var/run/docker.sock:/var/run/docker.sock \
+    -v /yourpath:/.config/jesseduffield/lazydocker \
+    lazyteam/lazydocker
     ```
 
-    On Windows, replace `$(pwd)` by `%cd%`.
+    - Don't forget to change `/yourpath` to an actual path you created to store lazydocker's config
+    - You can also use this [docker-compose.yml](https://github.com/jesseduffield/lazydocker/blob/master/docker-compose.yml)
+    - You might want to create an alias, for example:
+
+        ```sh
+        echo "alias ld='docker run -it -v /var/run/docker.sock:/var/run/docker.sock -v /yourpath/config:/.config/jesseduffield/lazydocker lazyteam/lazydocker'" >> ~/.zshrc
+        ```
 
-    You can optionally bind mount the config directory with `-v $(pwd)/config:/.config/jesseduffield/lazydocker`,
-    although it is saved in a volume by default.
 
-    You can also use this [docker-compose.yml](https://github.com/jesseduffield/lazydocker/blob/master/docker-compose.yml)
 
 For development, you can build the image using: