Fix master build for docs docker (#3004)

.drone.yml

@@ -194,6 +194,7 @@ pipeline:
     pull: true
     secrets: [ docker_username, docker_password ]
     repo: gitea/docs
+    context: docs
     dockerfile: docs/Dockerfile
     tags: [ '${DRONE_BRANCH##release/v}' ]
     when:
@@ -205,6 +206,7 @@ pipeline:
     pull: true
     secrets: [ docker_username, docker_password ]
     repo: gitea/docs
+    context: docs
     dockerfile: docs/Dockerfile
     tags: [ 'latest' ]
     when:

docs/Dockerfile

@@ -16,7 +16,7 @@ EXPOSE 80
 RUN apk add --no-cache wget mailcap ca-certificates
 COPY --from=build-env /go/bin/caddy /usr/sbin/caddy
 
-COPY docs/docker/caddy.conf /etc/caddy.conf
-COPY docs/public /srv/www
+COPY docker/caddy.conf /etc/caddy.conf
+COPY public /srv/www
 
 CMD ["/usr/sbin/caddy", "-conf", "/etc/caddy.conf"]