diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 6db0364..953e7cf 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -16,7 +16,7 @@ jobs:
     env:
       GO_VERSION: 1.17
       GOLANGCI_LINT_VERSION: v1.43.0
-      SEIHON_VERSION: v0.8.3
+      SEIHON_VERSION: v0.9.0
       CGO_ENABLED: 0
 
     steps:
diff --git a/Dockerfile b/Dockerfile
deleted file mode 100644
index 0831119..0000000
--- a/Dockerfile
+++ /dev/null
@@ -1,21 +0,0 @@
-FROM golang:1-alpine as builder
-
-RUN apk --update upgrade \
-    && apk --no-cache --no-progress add git make gcc musl-dev
-
-WORKDIR /go/src/github.com/ldez/traefik-certs-dumper
-
-ENV GO111MODULE on
-COPY go.mod go.sum ./
-RUN go mod download
-
-COPY . .
-RUN make build
-
-FROM alpine:3.10
-RUN apk --update upgrade \
-    && apk --no-cache --no-progress add ca-certificates
-
-COPY --from=builder /go/src/github.com/ldez/traefik-certs-dumper/traefik-certs-dumper /usr/bin/traefik-certs-dumper
-
-ENTRYPOINT ["/usr/bin/traefik-certs-dumper"]