Docker Build Error: "gpg: keyserver receive failed: No name" - amazon-web-services

Question

I'm trying build a docker container with the following command:
sudo docker build docker_calculadora/
but when it's building, at the step 9 it appears the following error:
Step 9/27 : RUN set -ex; export GNUPGHOME="$(mktemp -d)"; for key in $GPG_KEYS; do gpg --batch --keyserver ha.pool.sks-keyservers.net --recv-keys "$key"; done; gpg --batch --export $GPG_KEYS > /etc/apt/trusted.gpg.d/mariadb.gpg; command -v gpgconf > /dev/null && gpgconf --kill all || :; rm -r "$GNUPGHOME"; apt-key list
---> Running in a80677ab986c
mktemp -d
export GNUPGHOME=/tmp/tmp.TiWBSXwFOS
gpg --batch --keyserver ha.pool.sks-keyservers.net --recv-keys 177F4010FE56CA3336300305F1656F24C74CD1D8
gpg: keybox '/tmp/tmp.TiWBSXwFOS/pubring.kbx' created
gpg: keyserver receive failed: No name
The command '/bin/sh -c set -ex; export GNUPGHOME="$(mktemp -d)"; for key in $GPG_KEYS; do gpg --batch --keyserver ha.pool.sks-keyservers.net --recv-keys "$key"; done; gpg --batch --export $GPG_KEYS > /etc/apt/trusted.gpg.d/mariadb.gpg; command -v gpgconf > /dev/null && gpgconf --kill all || :; rm -r "$GNUPGHOME"; apt-key list' returned a non-zero code: 2
My DockerFile:
# vim:set ft=dockerfile:
FROM ubuntu:focal
# add our user and group first to make sure their IDs get assigned consistently, regardless of whatever dependencies get added
RUN groupadd -r mysql && useradd -r -g mysql mysql
# https://bugs.debian.org/830696 (apt uses gpgv by default in newer releases, rather than gpg)
RUN set -ex; \
apt-get update; \
if ! which gpg; then \
apt-get install -y --no-install-recommends gnupg; \
fi; \
if ! gpg --version | grep -q '^gpg (GnuPG) 1\.'; then \
# Ubuntu includes "gnupg" (not "gnupg2", but still 2.x), but not dirmngr, and gnupg 2.x requires dirmngr
# so, if we're not running gnupg 1.x, explicitly install dirmngr too
apt-get install -y --no-install-recommends dirmngr; \
fi; \
rm -rf /var/lib/apt/lists/*
# add gosu for easy step-down from root
# https://github.com/tianon/gosu/releases
ENV GOSU_VERSION 1.12
RUN set -eux; \
savedAptMark="$(apt-mark showmanual)"; \
apt-get update; \
apt-get install -y --no-install-recommends ca-certificates wget; \
rm -rf /var/lib/apt/lists/*; \
dpkgArch="$(dpkg --print-architecture | awk -F- '{ print $NF }')"; \
wget -O /usr/local/bin/gosu "https://github.com/tianon/gosu/releases/download/$GOSU_VERSION/gosu-$dpkgArch"; \
wget -O /usr/local/bin/gosu.asc "https://github.com/tianon/gosu/releases/download/$GOSU_VERSION/gosu-$dpkgArch.asc"; \
export GNUPGHOME="$(mktemp -d)"; \
gpg --batch --keyserver hkps://keys.openpgp.org --recv-keys B42F6819007F00F88E364FD4036A9C25BF357DD4; \
gpg --batch --verify /usr/local/bin/gosu.asc /usr/local/bin/gosu; \
gpgconf --kill all; \
rm -rf "$GNUPGHOME" /usr/local/bin/gosu.asc; \
apt-mark auto '.*' > /dev/null; \
[ -z "$savedAptMark" ] || apt-mark manual $savedAptMark > /dev/null; \
apt-get purge -y --auto-remove -o APT::AutoRemove::RecommendsImportant=false; \
chmod +x /usr/local/bin/gosu; \
gosu --version; \
gosu nobody true
RUN mkdir /docker-entrypoint-initdb.d
# install "pwgen" for randomizing passwords
# install "tzdata" for /usr/share/zoneinfo/
# install "xz-utils" for .sql.xz docker-entrypoint-initdb.d files
RUN set -ex; \
apt-get update; \
apt-get install -y --no-install-recommends \
pwgen \
tzdata \
xz-utils \
; \
rm -rf /var/lib/apt/lists/*
ENV GPG_KEYS \
# pub rsa4096 2016-03-30 [SC]
# 177F 4010 FE56 CA33 3630 0305 F165 6F24 C74C D1D8
# uid [ unknown] MariaDB Signing Key <signing-key#mariadb.org>
# sub rsa4096 2016-03-30 [E]
177F4010FE56CA3336300305F1656F24C74CD1D8
RUN set -ex; \
export GNUPGHOME="$(mktemp -d)"; \
for key in $GPG_KEYS; do \
gpg --batch --keyserver ha.pool.sks-keyservers.net --recv-keys "$key"; \
done; \
gpg --batch --export $GPG_KEYS > /etc/apt/trusted.gpg.d/mariadb.gpg; \
command -v gpgconf > /dev/null && gpgconf --kill all || :; \
rm -r "$GNUPGHOME"; \
apt-key list
# bashbrew-architectures: amd64 arm64v8 ppc64le
ENV MARIADB_MAJOR 10.5
ENV MARIADB_VERSION 1:10.5.8+maria~focal
# release-status:Stable
# (https://downloads.mariadb.org/mariadb/+releases/)
RUN set -e;\
echo "deb http://ftp.osuosl.org/pub/mariadb/repo/$MARIADB_MAJOR/ubuntu focal main" > /etc/apt/sources.list.d/mariadb.list; \
{ \
echo 'Package: *'; \
echo 'Pin: release o=MariaDB'; \
echo 'Pin-Priority: 999'; \
} > /etc/apt/preferences.d/mariadb
# add repository pinning to make sure dependencies from this MariaDB repo are preferred over Debian dependencies
# libmariadbclient18 : Depends: libmysqlclient18 (= 5.5.42+maria-1~wheezy) but 5.5.43-0+deb7u1 is to be installed
# the "/var/lib/mysql" stuff here is because the mysql-server postinst doesn't have an explicit way to disable the mysql_install_db codepath besides having a database already "configured" (ie, stuff in /var/lib/mysql/mysql)
# also, we set debconf keys to make APT a little quieter
RUN set -ex; \
{ \
echo "mariadb-server-$MARIADB_MAJOR" mysql-server/root_password password 'unused'; \
echo "mariadb-server-$MARIADB_MAJOR" mysql-server/root_password_again password 'unused'; \
} | debconf-set-selections; \
apt-get update; \
apt-get install -y \
"mariadb-server=$MARIADB_VERSION" \
# mariadb-backup is installed at the same time so that `mysql-common` is only installed once from just mariadb repos
mariadb-backup \
socat \
; \
rm -rf /var/lib/apt/lists/*; \
# purge and re-create /var/lib/mysql with appropriate ownership
rm -rf /var/lib/mysql; \
mkdir -p /var/lib/mysql /var/run/mysqld; \
chown -R mysql:mysql /var/lib/mysql /var/run/mysqld; \
# ensure that /var/run/mysqld (used for socket and lock files) is writable regardless of the UID our mysqld instance ends up having at runtime
chmod 777 /var/run/mysqld; \
# comment out a few problematic configuration values
find /etc/mysql/ -name '*.cnf' -print0 \
| xargs -0 grep -lZE '^(bind-address|log|user\s)' \
| xargs -rt -0 sed -Ei 's/^(bind-address|log|user\s)/#&/'; \
# don't reverse lookup hostnames, they are usually another container
echo '[mysqld]\nskip-host-cache\nskip-name-resolve' > /etc/mysql/conf.d/docker.cnf
VOLUME /var/lib/mysql
COPY docker-entrypoint.sh /usr/local/bin/
ENTRYPOINT ["docker-entrypoint.sh"]
EXPOSE 3306
RUN apt-get update
#RUN apt-get install -y software-properties-common
#RUN apt-get update
RUN apt-get install -y apache2 curl nano php libapache2-mod-php php7.4-mysql
EXPOSE 80
COPY calculadora.html /var/www/html/
COPY calculadora.php /var/www/html/
COPY success.html /var/www/html/
COPY start.sh /
COPY 50-server.cnf /etc/mysql/mariadb.conf.d/
RUN chmod 777 /start.sh
CMD ["/start.sh"]
'''

Answer 1

The error is because some servers that used the Mariadb image in the Dockerfile are down. Just need to update them.