diff --git a/dockerfiles/ubuntu/Dockerfile b/Dockerfile
similarity index 81%
rename from dockerfiles/ubuntu/Dockerfile
rename to Dockerfile
index 1592083..69687ef 100644
--- a/dockerfiles/ubuntu/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,8 @@
 ARG base_image=ubuntu:latest
 ARG builder_image=concourse/golang-builder
 
+FROM busybox:uclibc as busybox
+
 FROM ${builder_image} AS builder
 WORKDIR /concourse/time-resource
 COPY go.mod .
@@ -16,10 +18,10 @@ RUN set -e; for pkg in $(go list ./...); do \
 	done
 
 FROM ${base_image} AS resource
-RUN apt update && apt upgrade -y -o Dpkg::Options::="--force-confdef"
-RUN apt update && apt install -y --no-install-recommends tzdata \
-	&& rm -rf /var/lib/apt/lists/*
+USER root
 COPY --from=builder /assets /opt/resource
+COPY --from=busybox /bin/sh /bin/sh
+COPY --from=busybox /bin/cp /bin/cp
 
 FROM resource AS tests
 COPY --from=builder /tests /tests
diff --git a/README.md b/README.md
index bc60d8f..cc13008 100644
--- a/README.md
+++ b/README.md
@@ -203,11 +203,10 @@ environment is consistent across any `docker` enabled platform. When the docker
 image builds, the test are run inside the docker container, on failure they
 will stop the build.
 
-Run the tests with the following commands for both `alpine` and `ubuntu` images:
+Run the tests with the following command:
 
 ```sh
-docker build -t time-resource --target tests -f dockerfiles/alpine/Dockerfile .
-docker build -t time-resource --target tests -f dockerfiles/ubuntu/Dockerfile .
+docker build -t time-resource --target tests --build-arg base_image=paketobuildpacks/run-jammy-static:latest .
 ```
 
 ### Contributing
diff --git a/dockerfiles/alpine/Dockerfile b/dockerfiles/alpine/Dockerfile
deleted file mode 100644
index 4f30967..0000000
--- a/dockerfiles/alpine/Dockerfile
+++ /dev/null
@@ -1,29 +0,0 @@
-ARG base_image=alpine:latest
-ARG builder_image=concourse/golang-builder
-
-FROM ${builder_image} as builder
-WORKDIR /concourse/time-resource
-COPY go.mod .
-COPY go.sum .
-RUN go mod download
-COPY . /concourse/time-resource
-ENV CGO_ENABLED 0
-RUN go build -o /assets/out github.com/concourse/time-resource/out
-RUN go build -o /assets/in github.com/concourse/time-resource/in
-RUN go build -o /assets/check github.com/concourse/time-resource/check
-RUN set -e; for pkg in $(go list ./...); do \
-		go test -o "/tests/$(basename $pkg).test" -c $pkg; \
-	done
-
-FROM ${base_image} AS resource
-RUN apk update && apk upgrade
-RUN apk add --update bash tzdata
-COPY --from=builder /assets /opt/resource
-
-FROM resource AS tests
-COPY --from=builder /tests /tests
-RUN set -e; for test in /tests/*.test; do \
-		$test; \
-	done
-
-FROM resource