add build status to readme

.drone.yml

@@ -2,6 +2,32 @@ kind: pipeline
 name: default
   
 steps:
+  - name: prebuild
+    image: golang:latest
+    commands:
+      - IMAGE=dr.dnix.de/$DRONE_REPO_NAME
+      - REV=$(git rev-list HEAD --count)
+      - BUILDDATE=$(date)
+      - BRANCH=$DRONE_COMMIT_BRANCH
+      - VERSIONGO=version.go
+      - TAGS=.tags
+      - echo "Building image $IMAGE:$BRANCH-$REV"
+      - echo  "package main" >$VERSIONGO
+      - echo "" >>$VERSIONGO
+      - echo "const (" >>$VERSIONGO
+      - echo -n "    FlokatiVersion = \"" >>$VERSIONGO
+      - echo -n "$BRANCH" >>$VERSIONGO
+      - echo "\"" >>$VERSIONGO
+      - echo -n "    FlokatiBuild   = \"" >>$VERSIONGO
+      - echo -n "$REV" >>$VERSIONGO
+      - echo "\"" >>$VERSIONGO
+      - echo -n "    FlokatiBuilddate = \"" >>$VERSIONGO
+      - echo -n "$BUILDDATE" >>$VERSIONGO
+      - echo "\"" >>$VERSIONGO
+      - echo ")" >>$VERSIONGO
+      - cat $VERSIONGO
+      - echo -n "$BRANCH-$REV" >$TAGS
+      - cat $TAGS
   - name: docker
     image: plugins/docker
     settings:

README.md

@@ -1,3 +1,5 @@
+[![Build Status](https://dev.dnix.de/api/badges/an/flokati/status.svg)](https://dev.dnix.de/an/flokati)
+
 # image-transformer
 
 Derived from https://karthikkaranth.me/blog/image-resizing-server-go-libvips/