Run wtfutil in Docker as unprivileged user

Dockerfile

@@ -18,5 +18,9 @@ ENV PATH=$PATH:./bin
 RUN make build
 
 FROM alpine
+
 COPY --from=build /go/src/github.com/wtfutil/wtf/bin/wtfutil /usr/local/bin/
-ENTRYPOINT "wtfutil"
+RUN adduser -h /config -DG users -u 20000 wtf
+
+USER wtf
+ENTRYPOINT ["wtfutil"]

README.md

@@ -133,6 +133,9 @@ docker build --build-args=version=v0.25.0 -t wtfutil .
 
 # run the container
 docker run -it wtfutil
+
+# run container with a local config file
+docker run -it -v path/to/config.yml:/config/config.yml wtfutil --config=/config/config.yml
 ```
 
 ## Communication