Adding docker-compose

Author: dbpolito

Dockerfile

@@ -1,6 +1,7 @@
+FROM docker/compose:alpine-1.25.5 as compose
+
 FROM alpine:3.11
 
-ARG DOCKER_VERSION=18.06.3-ce
 ARG HELM_VERSION=3.2.0
 ARG KUBECTL_VERSION=1.18.2
 ARG AWS_IAM_AUTH_VERSION=0.5.0
@@ -17,9 +18,10 @@ WORKDIR /tmp
 RUN apk add --update --no-cache --virtual .build-deps curl ca-certificates
 
 # Install docker
-RUN curl -L https://download.docker.com/linux/static/stable/x86_64/docker-${DOCKER_VERSION}.tgz | tar xz && \
-    mv docker/docker /usr/local/bin/docker && \
-    chmod +x /usr/local/bin/docker
+COPY --from=compose /usr/local/bin/docker /usr/local/bin/docker
+
+# Install docker-compose
+COPY --from=compose /usr/local/bin/docker-compose /usr/local/bin/docker-compose
 
 # Install kubectl
 RUN curl -L https://storage.googleapis.com/kubernetes-release/release/v${KUBECTL_VERSION}/bin/linux/amd64/kubectl -o /usr/local/bin/kubectl && \