diff --git a/api/agent/lb_agent_test.go b/api/agent/lb_agent_test.go
index de852e42b..76c44bc84 100644
--- a/api/agent/lb_agent_test.go
+++ b/api/agent/lb_agent_test.go
@@ -47,11 +47,11 @@ func newMockRunnerPool(rf insecureRunnerFactory, runnerAddrs []string) *mockRunn
 	}
 }
 
-func (npm *mockRunnerPool) Runners(call pool.RunnerCall) ([]pool.Runner, error) {
-	return npm.runners, nil
+func (rp *mockRunnerPool) Runners(call pool.RunnerCall) ([]pool.Runner, error) {
+	return rp.runners, nil
 }
 
-func (npm *mockRunnerPool) Shutdown(context.Context) error {
+func (rp *mockRunnerPool) Shutdown(context.Context) error {
 	return nil
 }
 
diff --git a/images/fnnpm/Dockerfile b/images/fnnpm/Dockerfile
deleted file mode 100644
index 9bf496c2d..000000000
--- a/images/fnnpm/Dockerfile
+++ /dev/null
@@ -1,14 +0,0 @@
-# build stage
-FROM golang:1.10-alpine AS build-env
-RUN apk --no-cache add build-base git bzr mercurial gcc
-ENV D=/go/src/github.com/fnproject/fn
-ADD . $D
-RUN cd $D/poolmanager/server && go build -o fnnpm && cp fnnpm /tmp/
-
-# final stage: the local fnproject/dind:latest will be either built afresh or
-# whatever is the latest from master, depending on whether we're releasing
-# a newer cut.
-FROM alpine:latest
-WORKDIR /app
-COPY --from=build-env /tmp/fnnpm /app/fnnpm
-CMD ["./fnnpm"]