use bullseye

go in buster is < 1.12, which was needed by prometheus client.

- Resolves: #16

1 files changed, 1 insertions, 1 deletions

diff --git a/Dockerfile b/Dockerfile
index f9279ca..412b2f4 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM debian:buster AS build
+FROM debian:bullseye AS build
 RUN apt-get -q update && env DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends \
     build-essential pkg-config golang-go git ca-certificates \
 && rm -rf /var/lib/apt/lists/*