Added read-only mount for docker.sock

Tagged specific versions to ensure it functions correctly in the future
Changed tagging name from dfimage to whaler

Dockerfile

@@ -1,11 +1,52 @@
-FROM golang AS builder
-WORKDIR $GOPATH
-RUN go get -u github.com/P3GLEG/Whaler
-WORKDIR $GOPATH/src/github.com/P3GLEG/Whaler
-RUN export CGO_ENABLED=0 && go build .
-RUN cp Whaler /root/Whaler
-
-FROM alpine
-WORKDIR /root/
-COPY --from=builder /root/Whaler .
-ENTRYPOINT ["./Whaler"]
+<!--
+  Title: Whaler
+  Description: reverse docker images easily 
+  Author: pegleg
+  -->
+
+# Whaler
+
+
+Whaler is a Go program which is designed to reverse engineer docker images into the Dockerfile that created it.  It currently performs the following actions
+
+  - Generates a Dockerfile from an Image
+  - Searches added filenames for potential secret files
+  - Extracts files that were added by the Docker ADD/COPY Instructions
+  - It also displays misc. information such as ports open, the user it runs as and environment variables. 
+
+![alt text](https://samaritan.ai/wp-content/uploads/2018/06/Screen-Shot-2018-06-04-at-8.51.22-PM.png "Logo Title Text 1")
+
+You can read more about this on my blog [Here](https://samaritan.ai/blog/reversing-docker-images-into-dockerfiles/)
+
+### How to run it
+
+The easiest way is to run the tool in docker container:
+
+```
+docker build --rm -t pegleg:whaler .
+alias whaler="docker run -t --rm -v /var/run/docker.sock:/var/run/docker.sock:ro pegleg:whaler"
+whaler -sV=1.36 nginx:latest
+```
+
+This tool will pull target docker image automatically. Parameter `-sV=1.36` is not always required.
+
+### How to build it
+Git clone the project into your $GOPATH/src directory and perform the following command
+```go
+go get -u github.com/P3GLEG/Whaler
+cd $GOPATH/src/github.com/P3GLEG/Whaler
+go build .
+```
+### How to run it
+```go
+./Whaler
+Usage of ./Whaler:
+  -f string
+    	File containing images to analyze seperated by line
+  -filter
+    	Filters filenames that create noise such as node_modules. Check ignore.go file for more details (default true)
+  -sV string
+    	Set the docker client ID to a specific version -sV=1.36
+  -v	Print all details about the image
+  -x	Save layers to current directory
+```

README.md

@@ -23,9 +23,9 @@ You can read more about this on my blog [Here](https://samaritan.ai/blog/reversi
 The easiest way is to run the tool in docker container:
 
 ```
-docker build -t dfimage .
-alias dfimage="docker run -v /var/run/docker.sock:/var/run/docker.sock --rm dfimage"
-dfimage -sV=1.36 nginx:latest
+docker build --rm -t pegleg:whaler .
+alias whaler="docker run -t --rm -v /var/run/docker.sock:/var/run/docker.sock:ro pegleg:whaler"
+whaler -sV=1.36 nginx:latest
 ```
 
 This tool will pull target docker image automatically. Parameter `-sV=1.36` is not always required.
@@ -50,3 +50,4 @@ Usage of ./Whaler:
   -v	Print all details about the image
   -x	Save layers to current directory
 ```
+