Adding docker support

.dockerignore

@@ -0,0 +1,4 @@
+.git/
+.vscode/
+*.txt
+!/requirements.txt

Dockerfile

@@ -0,0 +1,6 @@
+FROM python:3.7-alpine
+RUN /sbin/apk add tor
+COPY . /opt/sherlock/
+RUN /usr/local/bin/pip install -r /opt/sherlock/requirements.txt
+
+ENTRYPOINT ["python", "/opt/sherlock/sherlock.py"]

README.md

@@ -47,6 +47,23 @@ optional arguments:
 For example, run ```python3 sherlock.py user123```, and all of the accounts
 found will be stored in a text file with the username (e.g ```user123.txt```).
 
+## Docker Notes
+If you have docker installed you can build an image and run this as a container.
+
+```
+docker build -t mysherlock-image .
+```
+
+Once the image is built sherlock can be invoked by running the following:
+
+```
+docker run --rm mysherlock-image user123
+```
+
+The ```--rm``` flag is optional.  It removes the container filesystem after running so you do not have a bunch of leftover container filesystem cruft.  See https://docs.docker.com/engine/reference/run/#clean-up---rm
+
+One caveat is the text file that is created will only exist in the container so you will not be able to get at that.
+
 ## License
 MIT License