chore: add ca-certs from alpine image

release/Dockerfile

@@ -1,8 +1,8 @@
-FROM debian:bookworm-slim
-RUN set -x && apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install -y \
-    ca-certificates && \
-    rm -rf /var/lib/apt/lists/*
+FROM alpine:3.18 as alpine
+RUN apk add -U --no-cache ca-certificates
 
+FROM scratch
 WORKDIR /app
+COPY --from=alpine /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/
 COPY ntfy-bridge /app/ntfy-bridge
 ENTRYPOINT ["/app/ntfy-bridge"]