ci: switch to v2-as-default script

Dockerfile.ci

@@ -0,0 +1,17 @@
+ARG DOCKER_HUB="docker.io"
+
+FROM ${DOCKER_HUB}/alpine:3.23
+
+ENV UID=1337 \
+    GID=1337
+
+RUN apk add --no-cache ffmpeg su-exec ca-certificates bash jq curl yq-go lottieconverter
+
+ARG EXECUTABLE=./mautrix-telegram
+COPY $EXECUTABLE /usr/bin/mautrix-telegram
+COPY ./docker-run.sh /docker-run.sh
+ENV BRIDGEV2=1
+VOLUME /data
+WORKDIR /data
+
+CMD ["/docker-run.sh"]