Merge pull request #423 from nginx-proxy/dependabot/docker/alpine-3.15.4

build(deps): bump alpine from 3.15.3 to 3.15.4

Author: buchdag

Dockerfile

@@ -13,7 +13,7 @@ RUN go mod download
 # Build the docker-gen executable
 RUN GOOS=linux CGO_ENABLED=0 go build -ldflags "-X main.buildVersion=${DOCKER_GEN_VERSION}" -o docker-gen ./cmd/docker-gen
 
-FROM alpine:3.15.3
+FROM alpine:3.15.4
 
 ARG DOCKER_GEN_VERSION
 ENV DOCKER_GEN_VERSION=${DOCKER_GEN_VERSION} \