ci(docker-build): fix Dockerfile path

.woodpecker/docker-build.yml

@@ -1,7 +1,6 @@
 variables:
   - &buildx woodpeckerci/plugin-docker-buildx:2.0.0
   - &platforms linux/amd64
-  - &dockerfile_path .woodpecker/docker/
   - &when_path .woodpecker/docker-build.yml
 
 matrix:
@@ -14,20 +13,19 @@ pipeline:
   dryrun:
     image: *buildx
     settings:
-      dockerfile: ${dockerfile_path}${DOCKERFILE}
+      dockerfile: .woodpecker/docker/${DOCKERFILE}
       platforms: *platforms
-      repo: gitea.aireone.xyz/${CI_REPO,,}/${DOCKERFILE/Dockerfile./}
       dry_run: true
     when:
       event: pull_request
       path:
         - *when_path
-        - ${dockerfile_path}${DOCKERFILE}
+        - .woodpecker/docker/${DOCKERFILE}
 
   publish:
     image: *buildx
     settings:
-      dockerfile: ${dockerfile_path}${DOCKERFILE}
+      dockerfile: .woodpecker/docker/${DOCKERFILE}
       platforms: *platforms
       registry: gitea.aireone.xyz
       repo: gitea.aireone.xyz/${CI_REPO,,}/${DOCKERFILE/Dockerfile./}
@@ -40,6 +38,6 @@ pipeline:
       event: push
       path:
         - *when_path
-        - ${dockerfile_path}${DOCKERFILE}
+        - .woodpecker/docker/${DOCKERFILE}
 
 branches: master