Fix Docker

distrib/docker/Dockerfile → Dockerfile

@@ -36,6 +36,14 @@ RUN mkdir -p /ircd-bin
 COPY --from=build-env /go/bin/oragono /ircd-bin
 COPY --from=build-env /go/src/github.com/oragono/oragono/languages /ircd-bin/languages/
 COPY --from=build-env /go/src/github.com/oragono/oragono/oragono.yaml /ircd-bin/oragono.yaml
+
+# modify default config file so that it doesn't die on IPv6
+#  and so it can be exposed via 6667 by default
+RUN apk add --no-cache python3
+RUN apk add --no-cache jq
+RUN pip3 install yq
+RUN yq -iy 'del(.server.listeners."[::1]:6667") | del(.server.listeners."127.0.0.1:6667") | .server.listeners += {":6667": {}}' /ircd-bin/oragono.yaml
+
 COPY distrib/docker/run.sh /ircd-bin/run.sh
 RUN chmod +x /ircd-bin/run.sh