chore: fixup

.dockerignore

@@ -0,0 +1,2 @@
+dist/
+vendor/

Dockerfile

@@ -1,11 +1,31 @@
-FROM golang:1.13-alpine as build
+# dynamic config
+ARG             BUILD_DATE
+ARG             VCS_REF
+ARG             VERSION
+
+# build
+FROM            golang:1.13-alpine as build
 RUN             apk add --update --no-cache git gcc musl-dev make
-ADD             . /go/src/moul.io/depviz
 WORKDIR         /go/src/moul.io/depviz
-RUN             GO111MODULE=on go get -v .
-RUN             GO111MODULE=on make install
+ENV             GO111MODULE=on
+COPY            go.* ./
+RUN             go mod download
+COPY            . ./
+RUN             make install
 
-FROM            alpine
+# minimalist runtime
+FROM            alpine:3.10
+LABEL           org.label-schema.build-date=$BUILD_DATE \
+                org.label-schema.name="depviz" \
+                org.label-schema.description="" \
+                org.label-schema.url="https://moul.io/depviz/" \
+                org.label-schema.vcs-ref=$VCS_REF \
+                org.label-schema.vcs-url="https://github.com/moul/depviz" \
+                org.label-schema.vendor="Manfred Touron" \
+                org.label-schema.version=$VERSION \
+                org.label-schema.schema-version="1.0" \
+                org.label-schema.cmd="docker run -i -t --rm moul/depviz" \
+                org.label-schema.help="docker exec -it $CONTAINER depviz --help"
 RUN             apk add --update --no-cache ca-certificates
 COPY            --from=build /go/bin/depviz /bin/
 ENTRYPOINT      ["depviz"]