Add pwd to docker container (kriskbx#108)

* add pwd
* add pwd doc
* add editor env

Dockerfile

@@ -1,9 +1,12 @@
 FROM node:8.2.1-alpine
 
 ENV GTT_VERSION 1.7.39
+ENV EDITOR vi
+
+WORKDIR /pwd
 
 RUN yarn global add --prefix /usr/local "gitlab-time-tracker@$GTT_VERSION"
 
-VOLUME ["/root"]
+VOLUME ["/root", "/pwd"]
 ENTRYPOINT ["gtt"]
 CMD ["--help"]

documentation.md

@@ -70,12 +70,13 @@ you can use the official [Docker image](https://hub.docker.com/r/kriskbx/gitlab-
 docker run \
        --rm -it \
        -v ~:/root \
+       -v $(pwd):/pwd \
        kriskbx/gitlab-time-tracker \
        --help
 ```
 
 `--rm` removes the container after running, `-it` makes it interactive, `-v ~:/root` mounts your home directory to the
-home directory inside the container. If you want to store the config in another place, mount another directory: 
+home directory inside the container, `-v $(pwd):/pwd` mounts current directory inside the container to gtt be able to read local config. If you want to store the config in another place, mount another directory: 
 
 
  ```shell
@@ -101,7 +102,7 @@ docker run \
 I highly recommend creating an alias and adding it to your `bashrc`:
 
 ```shell
-echo "alias gtt='docker run --rm -it -v ~:/root kriskbx/gitlab-time-tracker'" >>~/.bashrc
+echo "alias gtt='docker run --rm -it -v ~:/root -v $(pwd):/pwd kriskbx/gitlab-time-tracker'" >>~/.bashrc
 ```
 
 Now you can simply write `gtt` instead of the bulky Docker command before. Try it out: `gtt --help`