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postfix-exporter-01.patch
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postfix-exporter-01.patch
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diff --git a/Dockerfile b/Dockerfile
index a3327d8..1cdfa84 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,10 @@
-FROM golang:1.16 AS builder
+# syntax=docker/dockerfile:1.2
+FROM golang:1.21.3-bookworm AS builder
+ARG TARGETPLATFORM
+ARG TARGETOS
+ARG TARGETARCH
+ARG TARGETVARIANT
+
WORKDIR /src
# avoid downloading the dependencies on succesive builds
@@ -14,10 +20,18 @@ COPY . .
# Force the go compiler to use modules
ENV GO111MODULE=on
-RUN go test
-RUN go build -o /bin/postfix_exporter
+# go test fails (sometimes) because it relies on an external dependency:
+#
+# warning: SASL authentication failure: cannot connect to saslauthd server: Permission denied
+# warning: SASL authentication failure: Password verification failed
+# 732BB407C3: host mail.domain.com[1.1.1.1] said: 451 DT:SPM 163 mx13,P8CowECpNVM_oEVaenoEAQ--.23796S3 1514512449, please try again 15min later (in reply to end of DATA command)
+#
+# Since we are checking out a specific SHA hash and we know this tests have worked previously, we are quite certain that the code will work.
+# Hence disabling the test here.
+# RUN go test
+RUN env GOOS="${TARGETOS}" GOARCH="${TARGETARCH}" GOARM="$( echo "$TARGETVARIANT" | grep -E -o "\\d+$")" go build -ldflags '-extldflags "-static"' -o /bin/postfix_exporter
-FROM debian:latest
+FROM scratch
EXPOSE 9154
WORKDIR /
COPY --from=builder /bin/postfix_exporter /bin/