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netbird/signal/Dockerfile.ubi
T
jnfrati d687f552b1 [signal] Align the UBI image with the other UBI variants
Main now ships UBI images for the client, combined server and proxy with
a shared license collector and a common shape, so the signal variant
should look the same to reviewers and to Red Hat certification. Signal
also listens on port 80 by default, which an arbitrary non-root UID
cannot bind on OpenShift or Podman.

Use release_files/collect-licenses.sh instead of a signal-only copy,
build for amd64 and arm64 like the other UBI entries, and run as
1000:0 with a group-writable /var/lib/netbird that also holds Let's
Encrypt data. Default NB_PORT to the legacy gRPC port 10000 so the
image starts unprivileged and serves a single listener.
2026-10-09 12:12:56 +02:00

37 lines
1.4 KiB
Docker

FROM registry.access.redhat.com/ubi9/ubi-minimal@sha256:7fbeae18dc9476399f565e68255f602a3374ea8614ba3d14843565131a13ff93
ARG TARGETPLATFORM
ARG VERSION=dev
ARG RELEASE=1
LABEL name="netbird-signal" \
maintainer="NetBird <dev@netbird.io>" \
vendor="NetBird GmbH" \
version="${VERSION}" \
release="${RELEASE}" \
summary="NetBird Signal" \
description="NetBird Signal brokers the connection handshakes between peers in NetBird networks."
COPY --chmod=0555 ${TARGETPLATFORM}/netbird-signal /go/bin/netbird-signal
COPY licenses/ /licenses/
# Only the data directory shares the root group for arbitrary non-root UIDs.
# Runtime-created Let's Encrypt keys retain the application's restrictive modes.
RUN mkdir -p /var/lib/netbird && \
chown 1000:0 /var/lib/netbird && \
chmod 0770 /var/lib/netbird && \
chmod -R a+rX /licenses
USER 1000:0
ENV HOME=/var/lib/netbird
ENV NB_LETSENCRYPT_DATA_DIR="/var/lib/netbird"
# Unprivileged ports: runtimes such as OpenShift and Podman keep the kernel
# default that reserves ports below 1024 for root, so serve on the legacy
# gRPC port instead of 80/443. Let's Encrypt also needs its challenge
# listener on an unprivileged port. 9090 is the metrics endpoint.
ENV NB_PORT="10000"
EXPOSE 10000 9090
# The signal server only handles SIGINT for a graceful stop.
STOPSIGNAL SIGINT
ENTRYPOINT ["/go/bin/netbird-signal", "run"]
CMD ["--log-file", "console"]