feat: call Last.fm using TLS

Need to install root certificates to authenticate their cert now.

Dockerfile

···
 # run on different image
 FROM debian:buster-slim
 
-RUN apt-get update && apt-get install -y openssl && rm -rf /var/lib/apt/lists/*
+RUN apt-get update \
+ && apt-get install -y openssl ca-certificates \
+ && rm -rf /var/lib/apt/lists/*
 
 WORKDIR /root
 

server/src/scrobble_monitor.rs

···
     async fn fetch_scrobble(&self) -> anyhow::Result<String> {
         let response = self
             .client
-            .get("http://ws.audioscrobbler.com/2.0")
+            .get("https://ws.audioscrobbler.com/2.0")
             .query(&[
                 ("method", "user.getRecentTracks"),
                 ("api_key", &self.api_key),