use build arg for base image

Signed-off-by: Alex Suraci <[email protected]>
concourse · Jan 8, 2021 · 240ecd9 · 240ecd9
1 parent 591e9fc
commit 240ecd9
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Showing 2 changed files with 6 additions and 2 deletions.
diff --git a/dockerfiles/alpine/Dockerfile b/dockerfiles/alpine/Dockerfile
@@ -1,3 +1,5 @@
+ARG base_image=alpine:edge
+
 FROM golang:1 as builder
 COPY . /src
 WORKDIR /src
@@ -11,7 +13,7 @@ RUN go build -o /assets/check ./cmd/check
 # no-op
 FROM scratch AS tests
 
-FROM alpine:edge
+FROM ${base_image}
 COPY --from=builder assets/ /opt/resource/
 RUN chmod +x /opt/resource/*
 RUN apk --no-cache add bash wget netcat-openbsd
diff --git a/dockerfiles/ubuntu/Dockerfile b/dockerfiles/ubuntu/Dockerfile
@@ -1,3 +1,5 @@
+ARG base_image=ubuntu:bionic
+
 FROM concourse/golang-builder as builder
 COPY . /src
 WORKDIR /src
@@ -11,7 +13,7 @@ RUN go build -o /assets/check ./cmd/check
 # no-op
 FROM scratch AS tests
 
-FROM ubuntu:bionic AS resource
+FROM ${base_image} AS resource
 COPY --from=builder assets/ /opt/resource/
 RUN chmod +x /opt/resource/*
 RUN apt-get update && apt-get -y install wget netcat-openbsd