Dockerfile - upgrade base image from s6-base(deb11) to s6-overlay-lite(deb12),...

Dockerfile - upgrade base image from s6-base(deb11) to s6-overlay-lite(deb12), upgrade kresd package repo url

Dockerfile

@@ -11,10 +11,10 @@ RUN apt-get -q update \
 ENV GOPATH=/go
 WORKDIR $GOPATH
 
-FROM registry.git.autistici.org/ai3/docker/s6-base
+FROM registry.git.autistici.org/ai3/docker/s6-overlay-lite:master
 
 COPY kresd.key /usr/share/keyrings/kresd.gpg
-RUN echo "deb [signed-by=/usr/share/keyrings/kresd.gpg] http://download.opensuse.org/repositories/home:/CZ-NIC:/knot-resolver-latest/Debian_11/ /" > /etc/apt/sources.list.d/kresd.list
+RUN echo "deb [signed-by=/usr/share/keyrings/kresd.gpg] https://download.opensuse.org/repositories/home:/CZ-NIC:/knot-resolver-latest/Debian_12/ /" > /etc/apt/sources.list.d/kresd.list
 
 RUN apt-get -q update \
   && DEBIAN_FRONTEND=noninteractive apt-get install -qy --no-install-recommends \