fixing download command (using curl).

docker/Dockerfile

@@ -35,10 +35,10 @@ ENV INFLUXD_CONFIG_PATH=/scrutiny/influxdb
 
 RUN apt-get update && apt-get install -y cron smartmontools=7.0-0ubuntu1~ubuntu18.04.1 ca-certificates curl tzdata \
     && update-ca-certificates \
-RUN case ${TARGETARCH} in \
-                "amd64")  S6_ARCH=amd64  ;; \
-                "arm64")  S6_ARCH=aarch64  ;; \
-           esac \
+    case ${TARGETARCH} in \
+        "amd64")  S6_ARCH=amd64  ;; \
+        "arm64")  S6_ARCH=aarch64  ;; \
+    esac \
     && curl https://github.com/just-containers/s6-overlay/releases/download/v1.21.8.0/s6-overlay-${S6_ARCH}.tar.gz -L -s --output /tmp/s6-overlay-${S6_ARCH}.tar.gz \
     && tar xzf /tmp/s6-overlay-${S6_ARCH}.tar.gz -C /