change workdir for build and enforce vendoring from Dockerfile

Dockerfile

@@ -1,25 +1,20 @@
 FROM umputun/baseimage:buildgo-latest as build
 
-WORKDIR /go/src/github.com/umputun/rss2twitter
-ADD . /go/src/github.com/umputun/rss2twitter
+WORKDIR /build/rss2twitter
+ADD . /build/rss2twitter
 
 # run tests
-RUN cd app && go test ./...
-
-# linters
-RUN golangci-lint run --deadline=300s --out-format=tab --disable-all --tests=false --enable=interfacer --enable=unconvert \
-    --enable=megacheck --enable=structcheck --enable=gas --enable=gocyclo --enable=dupl --enable=misspell \
-    --enable=maligned --enable=unparam --enable=varcheck --enable=deadcode --enable=typecheck --enable=errcheck ./...
+RUN cd app && go test -mod=vendor ./...
 
 RUN \
     version=$(/script/git-rev.sh) && \
     echo "version=$version" && \
-    go build -o rss2twitter -ldflags "-X main.revision=${version} -s -w" ./app
+    go build -mod=vendor -o rss2twitter -ldflags "-X main.revision=${version} -s -w" ./app
 
 
 FROM umputun/baseimage:app-latest
 
-COPY --from=build /go/src/github.com/umputun/rss2twitter/rss2twitter /srv/rss2twitter
+COPY --from=build /build/rss2twitter/rss2twitter /srv/rss2twitter
 RUN \
     chown -R app:app /srv && \
     chmod +x /srv/rss2twitter