skip legacy drone check

Dockerfile

@@ -1,12 +1,6 @@
 FROM umputun/baseimage:buildgo-v1.8.0 as build-backend
 
 ARG CI
-ARG DRONE
-ARG DRONE_TAG
-ARG DRONE_COMMIT
-ARG DRONE_BRANCH
-ARG DRONE_PULL_REQUEST
-
 ARG SKIP_BACKEND_TEST
 ARG BACKEND_TEST_TIMEOUT
 
@@ -30,8 +24,7 @@ RUN \
 
 # if DRONE presented use DRONE_* git env to make version
 RUN \
-    if [ -z "$DRONE" ] ; then echo "runs outside of drone" && version="$(/script/git-rev.sh)" ; \
-    else version=${DRONE_TAG}${DRONE_BRANCH}${DRONE_PULL_REQUEST}-${DRONE_COMMIT:0:7}-$(date +%Y%m%d-%H:%M:%S) ; fi && \
+    version="$(/script/git-rev.sh)" && \
     echo "version=$version" && \
     go build -o remark42 -ldflags "-X main.revision=${version} -s -w" ./app