add dockerfile for development (#38)

Dockerfile

@@ -0,0 +1,10 @@
+FROM golang:1.21.12
+RUN apt-get update && \
+    apt-get install -y git neovim make
+WORKDIR /app
+COPY go.mod go.sum /
+RUN go mod download
+COPY . .
+RUN make install
+ENTRYPOINT sh
+

README.md

@@ -45,4 +45,13 @@ make sandbox # creates the directory and copies over from ~/.config
 make clean # removes directory
 ```
 
+### Docker
+You can also run the docker container that will set up a barebones shell for you
+to test dotctl with 
+
+```sh
+docker built -d dotctl-dev .
+docker run -it dotctl-dev
+dotctl status
+```