Merge pull request #1218 from mostafahussein/dockerfile-enhancements

Use LABEL and Make use of multi-stage build

Dockerfile

@@ -1,5 +1,5 @@
-FROM ruby:2.5-alpine
-MAINTAINER WPScan Team <team@wpscan.org>
+FROM ruby:2.5-alpine AS builder
+LABEL maintainer="WPScan Team <team@wpscan.org>"
 
 ARG BUNDLER_ARGS="--jobs=8 --without test development"
 
@@ -9,19 +9,27 @@ RUN echo "gem: --no-ri --no-rdoc" > /etc/gemrc
 COPY . /wpscan
 RUN chown -R wpscan:wpscan /wpscan
 
-# runtime dependencies
-RUN apk add --no-cache libcurl procps sqlite-libs && \
-  # build dependencies
-  apk add --no-cache --virtual build-deps git libcurl ruby-dev libffi-dev make gcc musl-dev zlib-dev procps sqlite-dev && \
-  bundle install --system --gemfile=/wpscan/Gemfile $BUNDLER_ARGS && \
-  apk del --no-cache build-deps
+# build dependencies
+RUN apk add --no-cache git libcurl ruby-dev libffi-dev make gcc musl-dev zlib-dev procps sqlite-dev && \
+  bundle install --system --gemfile=/wpscan/Gemfile $BUNDLER_ARGS
 
 WORKDIR /wpscan
 RUN rake install --trace
 
+FROM ruby:2.5-alpine
+LABEL maintainer="WPScan Team <team@wpscan.org>"
+
+RUN adduser -h /wpscan -g WPScan -D wpscan
+
+COPY --from=builder /usr/local/bundle /usr/local/bundle
+COPY --from=builder /wpscan /wpscan
+RUN chown -R wpscan:wpscan /wpscan
+
+# runtime dependencies
+RUN apk add --no-cache libcurl procps sqlite-libs
+
 USER wpscan
 RUN /usr/local/bundle/bin/wpscan --update --verbose
 
 ENTRYPOINT ["/usr/local/bundle/bin/wpscan"]
 CMD ["--help"]
-