chore: bump some dependencies and build docker image

Dockerfile

@@ -1,4 +1,4 @@
-FROM golang:1.17.3-alpine as build
+FROM golang:1.17.5-alpine3.15 as build
 WORKDIR /src/prometheus-kafka-adapter
 
 COPY go.mod go.sum vendor *.go ./
@@ -8,7 +8,7 @@ ADD . /src/prometheus-kafka-adapter
 RUN apk add --no-cache gcc musl-dev
 RUN go build -ldflags='-w -s -extldflags "-static"' -tags musl,static,netgo -mod=vendor -o /prometheus-kafka-adapter
 
-FROM alpine:3.14
+FROM alpine:3.15
 
 COPY schemas/metric.avsc /schemas/metric.avsc
 COPY --from=build /prometheus-kafka-adapter /

Makefile

@@ -13,14 +13,17 @@ test:
  docker run --rm -v $(CURDIR):/app:z -w /app golang:$(MUSL_GO_VER) sh tools/testscript.sh vet
  docker run --rm -v $(CURDIR):/app:z -w /app golang:$(MUSL_GO_VER) sh tools/testscript.sh test
 
-build: build-libc build-musl
+build: build-libc build-musl build-docker-image
 
 build-libc:
  docker run --rm -v $(CURDIR):/app:z -w /app golang:$(LIBC_GO_VER) sh tools/buildscript.sh $(NAME)
 
 build-musl:
  docker run --rm -v $(CURDIR):/app:z -w /app golang:$(MUSL_GO_VER) sh tools/buildscript.sh $(NAME)
 
+build-docker-image:
+ docker build -t telefonica/prometheus-kafka-adapter:latest .
+
 vendor-update:
  rm -rf go.mod go.sum vendor/
  docker run --rm -v $(CURDIR):/app:z -w /app golang:$(MUSL_GO_VER) go mod init $(PACKAGE_NAME)

README.md

@@ -34,7 +34,7 @@ The Avro-JSON serialization is the same. See the [Avro schema](./schemas/metric.
 
 ### prometheus-kafka-adapter
 
-There is a docker image `telefonica/prometheus-kafka-adapter:1.7.0` [available on Docker Hub](https://hub.docker.com/r/telefonica/prometheus-kafka-adapter/).
+There is a docker image `telefonica/prometheus-kafka-adapter:1.8.0` [available on Docker Hub](https://hub.docker.com/r/telefonica/prometheus-kafka-adapter/).
 
 Prometheus-kafka-adapter listens for metrics coming from Prometheus and sends them to Kafka. This behaviour can be configured with the following environment variables: