feat: add full Zonemaster stack with Docker and Spanish UI

- Clone all 5 Zonemaster component repos (LDNS, Engine, CLI, Backend, GUI)
- Dockerfile.backend: 8-stage multi-stage build LDNS→Engine→CLI→Backend
- Dockerfile.gui: Astro static build served via nginx
- docker-compose.yml: backend (internal) + frontend (port 5353)
- nginx.conf: root redirects to /es/, /api/ proxied to backend
- zonemaster-gui/config.ts: defaultLanguage set to 'es' (Spanish)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

zonemaster-backend/Dockerfile

@@ -0,0 +1,108 @@
+FROM zonemaster/cli:local AS build
+
+ARG version
+
+USER root
+
+RUN apk add --no-cache \
+	make \
+	curl \
+	gcc \
+	perl-dev \
+	musl-dev \
+	perl-app-cpanminus
+
+RUN apk add --no-cache \
+	jq \
+	perl-class-method-modifiers \
+	perl-config-inifiles \
+	perl-dbd-sqlite \
+	perl-dbi \
+	perl-file-share \
+	perl-file-slurp \
+	perl-html-parser \
+	perl-http-parser-xs \
+	perl-mojolicious \
+	perl-io-stringy \
+	perl-log-any \
+	perl-log-dispatch \
+	perl-moose \
+	perl-parallel-forkmanager \
+	perl-plack \
+	perl-role-tiny \
+	perl-test-nowarnings \
+	perl-test-differences \
+	perl-test-exception \
+	perl-try-tiny \
+	perl-doc
+
+# for METRIC 
+RUN cpanm --notest --no-wget --from https://cpan.metacpan.org/ \
+	Net::Statsd 
+
+COPY ./Zonemaster-Backend-${version}.tar.gz ./Zonemaster-Backend-${version}.tar.gz
+
+RUN cpanm --notest --no-wget --from https://cpan.metacpan.org \
+    ./Zonemaster-Backend-${version}.tar.gz
+
+
+FROM zonemaster/cli:local
+USER root
+
+COPY --from=build /usr/local/share/perl5 /usr/local/share/perl5
+COPY --from=build /usr/local/bin/ /usr/local/bin/
+COPY --from=build /usr/lib/perl5 /usr/lib/perl5
+
+RUN apk add --no-cache \
+	jq \
+	perl-config-inifiles \
+	perl-mojolicious \
+	perl-moose \
+	perl-dbi \
+	perl-dbd-sqlite \
+	perl-plack \
+	perl-parallel-forkmanager
+
+# Create zonemaster user and group
+RUN addgroup -S zonemaster
+RUN adduser  -S zonemaster -G zonemaster
+
+RUN cd `perl -MFile::ShareDir=dist_dir -E 'say dist_dir("Zonemaster-Backend")'` && \
+	install -v -m 755 -d /etc/zonemaster && \
+	install -v -m 775 -g zonemaster -d /var/log/zonemaster && \
+	install -v -m 640 -g zonemaster ./backend_config.ini /etc/zonemaster/
+
+
+# Init SQLite database
+RUN install -v -m 755 -o zonemaster -g zonemaster -d /var/lib/zonemaster
+USER zonemaster
+RUN  $(perl -MFile::ShareDir -le 'print File::ShareDir::dist_dir("Zonemaster-Backend")')/create_db.pl
+USER zonemaster
+COPY zonemaster_launch /usr/local/bin
+
+USER root
+ARG S6_OVERLAY_VERSION=3.2.1.0
+
+# Install S6
+ADD https://github.com/just-containers/s6-overlay/releases/download/v${S6_OVERLAY_VERSION}/s6-overlay-noarch.tar.xz /tmp
+RUN tar -C / -Jxpf /tmp/s6-overlay-noarch.tar.xz
+ADD https://github.com/just-containers/s6-overlay/releases/download/v${S6_OVERLAY_VERSION}/s6-overlay-x86_64.tar.xz /tmp
+RUN tar -C / -Jxpf /tmp/s6-overlay-x86_64.tar.xz
+
+
+# RPCAPI service
+RUN mkdir /etc/s6-overlay/s6-rc.d/rpcapi
+RUN echo "longrun" > /etc/s6-overlay/s6-rc.d/rpcapi/type
+RUN echo "#!/command/with-contenv sh" > /etc/s6-overlay/s6-rc.d/rpcapi/run
+RUN echo "zonemaster_launch rpcapi" >> /etc/s6-overlay/s6-rc.d/rpcapi/run
+
+# TESTAGENT sevice
+RUN mkdir /etc/s6-overlay/s6-rc.d/testagent
+RUN echo "longrun" > /etc/s6-overlay/s6-rc.d/testagent/type
+RUN echo "#!/command/with-contenv sh" > /etc/s6-overlay/s6-rc.d/testagent/run
+RUN echo "zonemaster_launch testagent" >> /etc/s6-overlay/s6-rc.d/testagent/run
+
+RUN touch /etc/s6-overlay/s6-rc.d/user/contents.d/rpcapi
+RUN touch /etc/s6-overlay/s6-rc.d/user/contents.d/testagent
+
+ENTRYPOINT ["/usr/local/bin/zonemaster_launch"]