Percona XtraBackup.

Add Percona's Debian repository and XtraBackup. Remove
libcurl4-gnutls-dev as it conflicts with the libcurl4-openssl-dev
requirement (I think that it would work just as well).

Dockerfile

@@ -19,6 +19,7 @@ RUN apt-get update && \
     gpg --no-default-keyring --import --batch --keyring /usr/share/keyrings/hashicorp.gpg && \
     curl https://dl.cloudsmith.io/public/cloudposse/packages/gpg.7333C6FDEFA717CC.key | \
     gpg --no-default-keyring --import --batch --keyring /usr/share/keyrings/cloudposse.gpg && \
+    gpg --no-default-keyring --keyring /usr/share/keyrings/percona.gpg --keyserver keys.gnupg.net --recv-keys 9334A25F8507EFA5 && \
     rm -rf /tmp/* /var/tmp/* /var/lib/apt/lists/* /var/cache/apt/archives/*
 COPY --chown=root:root sources.d/* /etc/apt/sources.list.d/
 COPY --chown=root:root preferences.d/* /etc/apt/preferences.d/
@@ -92,7 +93,6 @@ RUN apt-get update && \
         libbz2-dev \
         libcairo2-dev \
         libcap2-bin \
-        libcurl4-gnutls-dev \
         libdbus-1-dev \
         libgirepository1.0-dev \
         liblcms2-dev \
@@ -129,6 +129,7 @@ RUN apt-get update && \
         npm \
         ostree \
         packer \
+        percona-xtrabackup-80 \
         php-cli \
         podman-toolbox \
         postgresql-client \

sources.d/percona.sources

+Types: deb
+URIs: https://repo.percona.com/apt/
+Suites: bullseye
+Components: main
+Signed-By: /usr/share/keyrings/percona.gpg