~ioc2rpz failed to build~ What outbound firewall rules are needed?

[dmgeurts]

Migrating to docker compose from images deployed two years ago, I get the following error during the ioc2rpz build:

Building ioc2rpz
Step 1/16 : FROM erlang:alpine
alpine: Pulling from library/erlang
96526aa774ef: Already exists
f1a0e614ce79: Pull complete
Digest: sha256:3a4a46200b33df3f81e214c5350fc1e4895650e81387da20613380f5e30ed092
Status: Downloaded newer image for erlang:alpine
 ---> 5ef3b4778c19
Step 2/16 : MAINTAINER Vadim Pavlov<ioc2rpz@gmail.com>
 ---> Running in b09acddf1cf3
Removing intermediate container b09acddf1cf3
 ---> 008919ee1ced
Step 3/16 : WORKDIR /opt/ioc2rpz
 ---> Running in cb88e9078832
Removing intermediate container cb88e9078832
 ---> ce860c8368f0
Step 4/16 : RUN mkdir -p /opt/ioc2rpz/cfg /opt/ioc2rpz/ssl /opt/ioc2rpz/db /opt/ioc2rpz/include /opt/ioc2rpz/src /opt/ioc2rpz/log && apk add bind-tools curl python3 gawk php lftp ripgrep
 ---> Running in befc5cee7b1c
fetch https://dl-cdn.alpinelinux.org/alpine/v3.18/main/x86_64/APKINDEX.tar.gz
fetch https://dl-cdn.alpinelinux.org/alpine/v3.18/community/x86_64/APKINDEX.tar.gz
(1/37) Installing fstrm (0.6.1-r2)
(2/37) Installing krb5-conf (1.0-r2)
(3/37) Installing libcom_err (1.47.0-r2)
(4/37) Installing keyutils-libs (1.6.3-r3)
(5/37) Installing libverto (0.3.2-r2)
(6/37) Installing krb5-libs (1.20.1-r1)
(7/37) Installing nghttp2-libs (1.57.0-r0)
(8/37) Installing protobuf-c (1.4.1-r2)
(9/37) Installing libuv (1.44.2-r2)
(10/37) Installing xz-libs (5.4.3-r0)
(11/37) Installing libxml2 (2.11.4-r0)
(12/37) Installing bind-libs (9.18.19-r0)
(13/37) Installing bind-tools (9.18.19-r0)
(14/37) Installing brotli-libs (1.0.9-r14)
(15/37) Installing libunistring (1.1-r1)
(16/37) Installing libidn2 (2.3.4-r1)
(17/37) Installing libcurl (8.4.0-r0)
(18/37) Installing curl (8.4.0-r0)
(19/37) Installing gawk (5.2.2-r0)
(20/37) Installing lftp (4.9.2-r5)
(21/37) Installing php81-common (8.1.25-r0)
(22/37) Installing argon2-libs (20190702-r4)
(23/37) Installing libedit (20221030.3.1-r1)
(24/37) Installing pcre2 (10.42-r1)
(25/37) Installing php81 (8.1.25-r0)
(26/37) Installing libbz2 (1.0.8-r5)
(27/37) Installing libexpat (2.5.0-r1)
(28/37) Installing libffi (3.4.4-r2)
(29/37) Installing gdbm (1.23-r1)
(30/37) Installing mpdecimal (2.5.1-r2)
(31/37) Installing libpanelw (6.4_p20230506-r0)
(32/37) Installing sqlite-libs (3.41.2-r2)
(33/37) Installing python3 (3.11.6-r0)
(34/37) Installing python3-pycache-pyc0 (3.11.6-r0)
(35/37) Installing pyc (0.1-r0)
(36/37) Installing python3-pyc (3.11.6-r0)
(37/37) Installing ripgrep (13.0.0-r3)
Executing busybox-1.36.1-r2.trigger
OK: 77 MiB in 62 packages
Removing intermediate container befc5cee7b1c
 ---> d18fde43597c
Step 5/16 : ADD src/* /opt/ioc2rpz/src/
 ---> 0836cfd86dc1
Step 6/16 : ADD include/* /opt/ioc2rpz/include/
 ---> ac042404ab26
Step 7/16 : ADD config/* /opt/ioc2rpz/config/
 ---> cb7ec1bef182
Step 8/16 : ADD rebar.config /opt/ioc2rpz/
 ---> 062f9a086d55
Step 9/16 : RUN rebar3 eunit && rebar3 release -d false
 ---> Running in 8bdfb1fd88ed
===> Verifying dependencies...
===> Failed to update package cowboy from repo hexpm
===> Package not found in any repo: cowboy 2.9.0
ERROR: Service 'ioc2rpz' failed to build: The command '/bin/sh -c rebar3 eunit && rebar3 release -d false' returned a non-zero code: 1

[dmgeurts]

This turned out to be a firewall permission issue.

From the logs I couldn't see what access was required. For ioc2rpz.gui I found the following targets:

• dl-cdn.alpinelinux.org
• unpkg.com
• cdn.jsdelivr.net
• use.fontawesome.com

But I've been unable to work out which targets the ioc2rpz build uses.