Update Dockerfile (#12922)

Author: sapk

Dockerfile

@@ -8,7 +8,7 @@ ENV GOPROXY ${GOPROXY:-direct}
 
 ARG GITEA_VERSION
 ARG TAGS="sqlite sqlite_unlock_notify"
-ENV TAGS "bindata $TAGS"
+ENV TAGS "bindata timetzdata $TAGS"
 ARG CGO_EXTRA_CFLAGS
 
 #Build deps
@@ -38,7 +38,6 @@ RUN apk --no-cache add \
     s6 \
     sqlite \
     su-exec \
-    tzdata \
     gnupg
 
 RUN addgroup \