Merge pull request #2608 from SlowMo24/minor-ducumentation

doc: add minor documentation

README.md

@@ -218,7 +218,8 @@ build GoAccess from source.
 
 A Docker image has been updated, capable of directing output from an access log. If you only want to output a report, you can pipe a log from the external environment to a Docker-based process:
 
-    cat access.log | docker run --rm -i -e LANG=$LANG allinurl/goaccess -a -o report.html --log-format COMBINED -
+    touch report.html
+    cat access.log | docker run --rm -i -v ./report.html:/report.html -e LANG=$LANG allinurl/goaccess -a -o report.html --log-format COMBINED -
 
 OR real-time
 

goaccess.1

@@ -600,6 +600,9 @@ octet of IPv4 user IP addresses and the last 80 bits of IPv6 addresses to
 zeros.
 e.g., 192.168.20.100 => 192.168.20.0
 e.g., 2a03:2880:2110:df07:face:b00c::1 => 2a03:2880:2110:df07::
+.IP
+.I Note:
+This deactivates -a.
 .TP
 \fB\-\-chunk-size=<256-32768>
 This determines the number of lines that form a chunk. This parameter