upgrade alpine base image v3.12 -> v3.13.5 including upgrade of tor package v0.4.3.5-r0 -> v0.4.4.8-r0 (diff links below)

https://gitweb.torproject.org/tor.git/plain/ChangeLog

https://git.alpinelinux.org/aports/commit/community/tor?id=3a247b9dbce3988d52b1a17a3d0bb5f1dc9b4863
https://git.alpinelinux.org/aports/commit/community/tor?id=2849fa38b9a76d1ef0a9df10aa70bafa00a5ab27
https://git.alpinelinux.org/aports/commit/community/tor?id=d181b0289ff7c32d371dcd976276672bbe2e7b72
https://git.alpinelinux.org/aports/commit/community/tor?id=9a0a0a5045901ab97ef455b54ffe19c91ca6993e
https://git.alpinelinux.org/aports/commit/community/tor?id=5edd132382384956e1787d4dcd5f1ffa9c520571
https://git.alpinelinux.org/aports/commit/community/tor?id=4ecb636d72d13db0f95f6e840e755bb260c91165
https://git.alpinelinux.org/aports/commit/community/tor?id=a9d54349aa5fec39e2d79c46838ce05904ca9bda
https://git.alpinelinux.org/aports/commit/community/tor?id=9ed5ece0dd0317f1976a1bb4729e911786d33af9
https://git.alpinelinux.org/aports/commit/community/tor?id=dc7ce7e4b63c64d11026e307ada830c33d8309a4

Dockerfile

@@ -1,7 +1,7 @@
 # https://pkgs.alpinelinux.org/packages?name=obfs4proxy&arch=x86_64
-FROM alpine:3.12
+FROM alpine:3.13.5
 
-ARG TOR_PACKAGE_VERSION=0.4.3.5-r0
+ARG TOR_PACKAGE_VERSION=0.4.4.8-r0
 ARG OBFS4PROXY_PACKAGE_VERSION=0.0.11-r2
 RUN apk add --no-cache tor=$TOR_PACKAGE_VERSION \
     && apk add --no-cache obfs4proxy=$OBFS4PROXY_PACKAGE_VERSION \