Include CLI tool in Docker image

Dockerfile

@@ -2,16 +2,23 @@ FROM docker.io/library/golang:alpine as builder
 
 ARG PB_BUILD_VERSION
 
+ARG CLI_VERSION=0.0.6
+ARG CLI_PLATFORM=linux_amd64
+
 WORKDIR /build
 
 COPY . .
 
 RUN set -ex \
-	&& apk add --no-cache build-base \
+	&& apk add --no-cache build-base ca-certificates curl \
 	&& go mod download \
 	&& go mod verify \
 	&& PB_BUILD_VERSION="$PB_BUILD_VERSION" make build \
-	&& chmod +x /build/out/pushbits
+	&& chmod +x /build/out/pushbits \
+	&& curl -q -s -S -L -o /tmp/pbcli_${CLI_VERSION}.tar.gz https://github.com/pushbits/cli/releases/download/v${CLI_VERSION}/pbcli_${CLI_VERSION}_${CLI_PLATFORM}.tar.gz \
+	&& tar -C /usr/local/bin -xvf /tmp/pbcli_${CLI_VERSION}.tar.gz pbcli \
+	&& chown root:root /usr/local/bin/pbcli \
+	&& chmod +x /usr/local/bin/pbcli
 
 FROM docker.io/library/alpine
 
@@ -25,6 +32,7 @@ WORKDIR /app
 
 COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/
 COPY --from=builder /build/out/pushbits ./run
+COPY --from=builder /usr/local/bin/pbcli /usr/local/bin/pbcli
 
 RUN set -ex \
 	&& apk add --no-cache ca-certificates curl \