Updated the Dockerfile to allow the gophish binary to bind to privile…

…ged ports. Fixes gophish#1660.

Dockerfile

@@ -23,7 +23,7 @@ FROM debian:stable-slim
 RUN useradd -m -d /opt/gophish -s /bin/bash app
 
 RUN apt-get update && \
-	apt-get install --no-install-recommends -y jq && \
+	apt-get install --no-install-recommends -y jq libcap2-bin && \
 	apt-get clean && \
 	rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
 
@@ -34,6 +34,8 @@ COPY --from=build-js /build/static/css/dist/ ./static/css/dist/
 COPY --from=build-golang /go/src/github.com/gophish/gophish/config.json ./
 RUN chown app. config.json
 
+RUN setcap 'cap_net_bind_service=+ep' /opt/gophish/gophish
+
 USER app
 RUN sed -i 's/127.0.0.1/0.0.0.0/g' config.json
 RUN touch config.json.tmp