feat(scan): support external port scanner(nmap) in host machine (#1207)

* feat(scan): load portscan settings from config.toml

* feat(scan): support external port scanner:nmap

* style: rename variable

* feat(scan): logging apply options

* feat(scan): remove spoof ip address option

* feat(scan): more validate port scan config

* style: change comment

* fix: parse port number as uint16

* feat(discover): add portscan section

* feat(discover): change default scanTechniques

* feat(docker): add nmap and version update

* feat(scan): nmap module upgrade

* fix: wrap err using %w

* feat(scan): print cmd using external port scanner

* feat(scan): more details external port scan command

* feat(scan): add capability check in validation

* fix(scanner): format error

* chore: change format

Dockerfile

@@ -11,9 +11,9 @@ COPY . $GOPATH/src/$REPOSITORY
 RUN cd $GOPATH/src/$REPOSITORY && make install
 
 
-FROM alpine:3.11
+FROM alpine:3.13
 
-MAINTAINER hikachan sadayuki-matsuno
+LABEL maintainer hikachan sadayuki-matsuno
 
 ENV LOGDIR /var/log/vuls
 ENV WORKDIR /vuls
@@ -22,6 +22,7 @@ RUN apk add --no-cache \
         openssh-client \
         ca-certificates \
         git \
+        nmap \
     && mkdir -p $WORKDIR $LOGDIR
 
 COPY --from=builder /go/bin/vuls /usr/local/bin/