# Build fails when using auto\_tag in Docker plugin **URL:** \ **Category:** Drone Support\ **Created:** [April 30, 2018, 2:54pm UTC](https://drone.discourse.group/t/build-fails-when-using-auto-tag-in-docker-plugin/11049 "2018-04-30T14:54:01Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![vshulev](https://yyz1.discourse-cdn.com/flex003/user_avatar/drone.discourse.group/vshulev/32/5609_2.png) [@vshulev](https://drone.discourse.group/u/vshulev)\ **Post date:** [April 30, 2018, 2:54pm UTC](https://drone.discourse.group/t/build-fails-when-using-auto-tag-in-docker-plugin/11049/1 "2018-04-30T14:54:01Z")
Hi there, I’m getting the following error when trying to use the Docker plugin with “auto\_tag” set to true: - /usr/local/bin/docker tag c36b6249e21c3aacd091f1f76f6f000d47837904 :latest Error parsing reference: “:latest” is not a valid repository/tag: invalid reference format Looks like there is an extra colon being appended to the tag name? ---
**Author:** ![bradrydzewski](https://yyz1.discourse-cdn.com/flex003/user_avatar/drone.discourse.group/bradrydzewski/32/3513_2.png) [@bradrydzewski](https://drone.discourse.group/u/bradrydzewski)\ **Post date:** [April 30, 2018, 3:28pm UTC](https://drone.discourse.group/t/build-fails-when-using-auto-tag-in-docker-plugin/11049/2 "2018-04-30T15:28:26Z")
@vshulev please help us help you buy posting a full example of your yaml configuration file. It looks like you are missing the `repo` attribute, however, we would need to see your configuration to properly diagnose. ---
**Author:** ![vshulev](https://yyz1.discourse-cdn.com/flex003/user_avatar/drone.discourse.group/vshulev/32/5609_2.png) [@vshulev](https://drone.discourse.group/u/vshulev)\ **Post date:** [May 1, 2018, 6:28am UTC](https://drone.discourse.group/t/build-fails-when-using-auto-tag-in-docker-plugin/11049/3 "2018-05-01T06:28:51Z")
Hi @bradrydzewski, Thanks for the amazingly quick response! Yes, the issue was that I was missing the `repo` attribute. It’s all working out now 🙂 Thanks, for the help! ---
**Author:** ![Skogsfrae](https://yyz1.discourse-cdn.com/flex003/user_avatar/drone.discourse.group/skogsfrae/32/5811_2.png) [@Skogsfrae](https://drone.discourse.group/u/Skogsfrae)\ **Post date:** [February 1, 2019, 4:42pm UTC](https://drone.discourse.group/t/build-fails-when-using-auto-tag-in-docker-plugin/11049/4 "2019-02-01T16:42:10Z")
Hi there. I’m having the same problem, but I’ve had the `repo` attribute filled from the start. Here’s my conf: ``` docker-build: image: plugins/docker settings: username: from_secret: docker-user password: from_secret: docker-password repo: my.docker-registry.com/my-app/server registry: my.docker-registry.com tags: latest ``` My step output: ``` Successfully built a03c5ce51dd3 Successfully tagged 0bc3414d19f1e423e12c7c5c111c9156689e67b8:latest + /usr/local/bin/docker tag 0bc3414d19f1e423e12c7c5c111c9156689e67b8 :latest Error parsing reference: ":latest" is not a valid repository/tag: invalid reference format ``` ---
**Author:** ![bradrydzewski](https://yyz1.discourse-cdn.com/flex003/user_avatar/drone.discourse.group/bradrydzewski/32/3513_2.png) [@bradrydzewski](https://drone.discourse.group/u/bradrydzewski)\ **Post date:** [February 1, 2019, 4:45pm UTC](https://drone.discourse.group/t/build-fails-when-using-auto-tag-in-docker-plugin/11049/5 "2019-02-01T16:45:22Z")
@Skogsfrae your configuration is invalid. The yaml syntax in your example is a mixture of 0.8 and 1.0, and therefore will fail in both versions of Drone. ---
**Author:** ![Skogsfrae](https://yyz1.discourse-cdn.com/flex003/user_avatar/drone.discourse.group/skogsfrae/32/5811_2.png) [@Skogsfrae](https://drone.discourse.group/u/Skogsfrae)\ **Post date:** [February 1, 2019, 4:51pm UTC](https://drone.discourse.group/t/build-fails-when-using-auto-tag-in-docker-plugin/11049/6 "2019-02-01T16:51:22Z")
@bradrydzewski thanks a lot for your quick answer! Is a doc of docker plugin syntax for 0.8 still available or should I update to 1.0 in order to use it? ---
**Author:** ![Skogsfrae](https://yyz1.discourse-cdn.com/flex003/user_avatar/drone.discourse.group/skogsfrae/32/5811_2.png) [@Skogsfrae](https://drone.discourse.group/u/Skogsfrae)\ **Post date:** [February 1, 2019, 5:00pm UTC](https://drone.discourse.group/t/build-fails-when-using-auto-tag-in-docker-plugin/11049/7 "2019-02-01T17:00:21Z")
Found this if someone else is going to need it [https://github.com/drone/drone-plugin-index/blob/2feceac8f3be03b706a2515c089eac290aba95b7/content/drone-plugins/drone-docker/index.md](https://github.com/drone/drone-plugin-index/blob/2feceac8f3be03b706a2515c089eac290aba95b7/content/drone-plugins/drone-docker/index.md) ---
**Author:** ![vivekthangathurai](https://yyz1.discourse-cdn.com/flex003/user_avatar/drone.discourse.group/vivekthangathurai/32/4919_2.png) [@vivekthangathurai](https://drone.discourse.group/u/vivekthangathurai)\ **Post date:** [February 23, 2020, 8:29am UTC](https://drone.discourse.group/t/build-fails-when-using-auto-tag-in-docker-plugin/11049/8 "2020-02-23T08:29:54Z")
I have the following configuration ```auto kind: pipeline type: docker name: default steps: - name: backend image: golang commands: - go build - go test - name: docker image: plugins/docker repo: vivek125/simplego registry: docker.io username: from_secret: docker_username password: from_secret: docker_password auto_tag: true when: branch: master ``` and the repo is not used in the tag Successfully built 6da4610ad6be 111 Successfully tagged 39d097259173f9fb3945e1d3b2fd8cb99b81b1dc:latest 112 + /usr/local/bin/docker tag 39d097259173f9fb3945e1d3b2fd8cb99b81b1dc :latest 113 Error parsing reference: “:latest” is not a valid repository/tag: invalid reference format ---
**Author:** ![bradrydzewski](https://yyz1.discourse-cdn.com/flex003/user_avatar/drone.discourse.group/bradrydzewski/32/3513_2.png) [@bradrydzewski](https://drone.discourse.group/u/bradrydzewski)\ **Post date:** [February 23, 2020, 7:54pm UTC](https://drone.discourse.group/t/build-fails-when-using-auto-tag-in-docker-plugin/11049/9 "2020-02-23T19:54:13Z")
All plugin configuration parameters need to go under the `settings` section which is missing from your configuration. See the [plugin docs](http://plugins.drone.io/drone-plugins/drone-docker/) for some example configurations.