Docker deploy started failing today: failed to solve

Here’s the relevant part of my Dockerfile:

ARG ELIXIR_VERSION=1.14.5
ARG OTP_VERSION=25.0
ARG DEBIAN_VERSION=bullseye-20210902-slim

ARG BUILDER_IMAGE="hexpm/elixir:${ELIXIR_VERSION}-erlang-${OTP_VERSION}-debian-${DEBIAN_VERSION}"
ARG RUNNER_IMAGE="debian:${DEBIAN_VERSION}"

And here’s the image it’s pulling: Image Layer Details - hexpm/elixir:1.14.5-erlang-25.0-debian-bullseye-20210902-slim

Here’s the error:

Sep 28 03:43:02 PM  #6 [internal] load metadata for docker.io/library/debian:bullseye-20210902-slim
Sep 28 03:43:02 PM  #6 ERROR: failed to authorize: failed to fetch oauth token: unexpected status: 503 Service Unavailable
Sep 28 03:43:02 PM  ------
Sep 28 03:43:02 PM   > [internal] load metadata for docker.io/library/debian:bullseye-20210902-slim:
Sep 28 03:43:02 PM  ------
Sep 28 03:43:02 PM  Dockerfile:79
Sep 28 03:43:02 PM  --------------------
Sep 28 03:43:02 PM    77 |     # start a new build stage so that the final image will only contain
Sep 28 03:43:02 PM    78 |     # the compiled release and other runtime necessities
Sep 28 03:43:02 PM    79 | >>> FROM ${RUNNER_IMAGE}
Sep 28 03:43:02 PM    80 |
Sep 28 03:43:02 PM    81 |     RUN apt-get update -y && apt-get install -y libstdc++6 openssl libncurses5 locales \
Sep 28 03:43:02 PM  --------------------
Sep 28 03:43:02 PM  error: failed to solve: debian:bullseye-20210902-slim: failed to authorize: failed to fetch oauth token: unexpected status: 503 Service Unavailable

Is this an issue with Docker services or a deprecation I need to fix myself in my codebase? Thanks!