Update caddy version and fix format.

Author: appleboy

caddy/Dockerfile

@@ -2,7 +2,7 @@ FROM alpine:3.4
 
 MAINTAINER Eric Pfeiffer <computerfr33k@users.noreply.github.com>
 
-ENV caddy_version=0.9.1
+ENV caddy_version=0.9.3
 
 LABEL caddy_version="$caddy_version" architecture="amd64"
 
@@ -11,11 +11,11 @@ RUN apk update \
     && apk add tar curl
 
 RUN curl --silent --show-error --fail --location \
-      --header "Accept: application/tar+gzip, application/x-gzip, application/octet-stream" -o - \
-      "https://github.com/mholt/caddy/releases/download/v$caddy_version/caddy_linux_amd64.tar.gz" \
-    | tar --no-same-owner -C /usr/bin/ -xz caddy_linux_amd64 \
- && mv /usr/bin/caddy_linux_amd64 /usr/bin/caddy \
- && chmod 0755 /usr/bin/caddy
+        --header "Accept: application/tar+gzip, application/x-gzip, application/octet-stream" -o - \
+        "https://github.com/mholt/caddy/releases/download/v$caddy_version/caddy_linux_amd64.tar.gz" \
+        | tar --no-same-owner -C /usr/bin/ -xz caddy_linux_amd64 \
+    && mv /usr/bin/caddy_linux_amd64 /usr/bin/caddy \
+    && chmod 0755 /usr/bin/caddy
 
 EXPOSE 80 443 2015