add xz package

static/Dockerfile

@@ -5,7 +5,7 @@ ENV PATH=/usr/local/texlive/bin/x86_64-linuxmusl:$PATH
 
 COPY ./texlive-profile.txt /tmp/
 
-RUN apk add --no-cache perl wget && \
+RUN apk add --no-cache perl wget xz && \
     \
     # Install texlive
     echo "downloading tlmgr" && \