upgrade alpine base image from v3.17.3 to v3.18.0 including upgrade of tor package from v0.4.7.13-r1 to v0.4.7.13-r2 (rebuild for zstd)

https://web.archive.org/web/20230512065949/https://git.alpinelinux.org/aports/commit/community/tor?h=3.18-stable&id=baae09009c531905af2a640f10b079334f7d8d66

https://github.com/fphammerle/docker-onion-service/commit/1cfcdfb9bce644b500047f0b201768cdc48c63d5

Dockerfile

@@ -1,7 +1,7 @@
 # https://pkgs.alpinelinux.org/packages?name=obfs4proxy&arch=x86_64
-FROM docker.io/alpine:3.17.3
+FROM docker.io/alpine:3.18.0
 
-ARG TOR_PACKAGE_VERSION=0.4.7.13-r1
+ARG TOR_PACKAGE_VERSION=0.4.7.13-r2
 ARG OBFS4PROXY_PACKAGE_VERSION=0.0.14-r7
 RUN apk add --no-cache tor=$TOR_PACKAGE_VERSION \
     && apk add --no-cache obfs4proxy=$OBFS4PROXY_PACKAGE_VERSION \