chore: switch promtails base image from debian to ubuntu (#15195)

Signed-off-by: Callum Styan <callumstyan@gmail.com>
(cherry picked from commit 4d9c5bb)

Makefile

@@ -895,6 +895,7 @@ trivy: loki-image build-image
 snyk: loki-image build-image
 	snyk container test $(IMAGE_PREFIX)/loki:$(IMAGE_TAG) --file=cmd/loki/Dockerfile
 	snyk container test $(IMAGE_PREFIX)/loki-build-image:$(IMAGE_TAG) --file=loki-build-image/Dockerfile
+	snyk container test $(IMAGE_PREFIX)/promtail:$(IMAGE_TAG) --file=clients/cmd/promtail/Dockerfile
 	snyk code test
 
 .PHONY: scan-vulnerabilities

clients/cmd/promtail/Dockerfile

@@ -6,12 +6,13 @@ WORKDIR /src/loki
 RUN apt-get update && apt-get install -qy libsystemd-dev
 RUN make clean && make BUILD_IN_CONTAINER=false PROMTAIL_JOURNAL_ENABLED=true promtail
 
-# Promtail requires debian as the base image to support systemd journal reading
-FROM debian:12.5-slim
+# Promtail requires debian or ubuntu as the base image to support systemd journal reading
+FROM public.ecr.aws/ubuntu/ubuntu:noble
 # tzdata required for the timestamp stage to work
-RUN apt-get update && \
-  apt-get install -qy tzdata ca-certificates libsystemd-dev && \
-  rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
+# Install dependencies needed at runtime.
+RUN  apt-get update \
+ &&  apt-get install -qy libsystemd-dev tzdata ca-certificates \
+ &&  rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
 COPY --from=build /src/loki/clients/cmd/promtail/promtail /usr/bin/promtail
 COPY clients/cmd/promtail/promtail-docker-config.yaml /etc/promtail/config.yml
 ENTRYPOINT ["/usr/bin/promtail"]

clients/cmd/promtail/Dockerfile.arm32

@@ -5,8 +5,8 @@ WORKDIR /src/loki
 RUN apt-get update && apt-get install -qy libsystemd-dev
 RUN make clean && make BUILD_IN_CONTAINER=false PROMTAIL_JOURNAL_ENABLED=true promtail
 
-# Promtail requires debian as the base image to support systemd journal reading
-FROM debian:12.5-slim
+# Promtail requires debian or ubuntu as the base image to support systemd journal reading
+FROM public.ecr.aws/ubuntu/ubuntu:noble
 # tzdata required for the timestamp stage to work
 RUN apt-get update && \
   apt-get install -qy tzdata ca-certificates wget libsystemd-dev && \

clients/cmd/promtail/Dockerfile.cross

@@ -13,8 +13,8 @@ COPY . /src/loki
 WORKDIR /src/loki
 RUN make clean && GOARCH=$(cat /goarch) GOARM=$(cat /goarm) make BUILD_IN_CONTAINER=false PROMTAIL_JOURNAL_ENABLED=true promtail
 
-# Promtail requires debian as the base image to support systemd journal reading
-FROM debian:12.5-slim
+# Promtail requires debian or ubuntu as the base image to support systemd journal reading
+FROM public.ecr.aws/ubuntu/ubuntu:noble
 # tzdata required for the timestamp stage to work
 RUN apt-get update && \
   apt-get install -qy tzdata ca-certificates wget libsystemd-dev && \