Set --webaddr to obtained container IP (#3114)

.dockerignore

@@ -1 +1,3 @@
 client/webserver/site/node_modules/
+spec/
+docs/

client/Dockerfile

@@ -44,10 +44,11 @@ RUN CGO_ENABLED=0 GOOS=linux GO111MODULE=on go build
 FROM debian:buster-slim
 RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install -y ca-certificates
 WORKDIR /dex
-ENV HOME /dex
+ENV HOME=/dex
 RUN mkdir -p /dex/.dexc && chown 1000 /dex/.dexc
 USER 1000
 COPY --from=gobuilder /root/dex/client/cmd/bisonw/bisonw ./
 COPY --from=gobuilder /root/dex/client/cmd/bwctl/bwctl ./
+COPY ./client/entrypoint.sh ./
 EXPOSE 5758
-CMD [ "./bisonw", "--webaddr=0.0.0.0:5758" ]
+ENTRYPOINT [ "./entrypoint.sh" ]

client/Dockerfile.release

@@ -32,10 +32,11 @@ RUN CGO_ENABLED=0 GOOS=linux GO111MODULE=on go build
 FROM debian:buster-slim
 RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install -y ca-certificates
 WORKDIR /dex
-ENV HOME /dex
+ENV HOME=/dex
 RUN mkdir -p /dex/.dexc && chown 1000 /dex/.dexc
 USER 1000
 COPY --from=gobuilder /root/dex/client/cmd/bisonw/bisonw ./
 COPY --from=gobuilder /root/dex/client/cmd/bwctl/bwctl ./
+COPY ./client/entrypoint.sh ./
 EXPOSE 5758
-CMD [ "./bisonw", "--webaddr=0.0.0.0:5758" ]
+ENTRYPOINT [ "./entrypoint.sh" ]

client/entrypoint.sh

@@ -0,0 +1,11 @@
+#!/bin/sh
+
+# Get the IP address of the primary network interface
+IP_ADDRESS=$(hostname -I | awk '{print $1}')
+
+CMD="./bisonw"
+if [ "$IP_ADDRESS" != "" ]; then
+    CMD="$CMD --webaddr $IP_ADDRESS:5758"
+fi
+
+exec $CMD