Indent dockerfile

Dockerfile

@@ -1,35 +1,35 @@
+LABEL MAINTAINERS="Nik Everett <[email protected]>"
+
 # Debian builds the docs about 20% faster than alpine. The image is larger
 # and takes longer to build but that is worth it.
 FROM bitnami/minideb:stretch
 
-LABEL MAINTAINERS="Nik Everett <[email protected]>"
-
 # Used by the docs build or asciidoctor
 RUN install_packages \
-bash \
-build-essential \
-curl \
-cmake \
-git \
-libnss-wrapper \
-libxml2-dev \
-libxml2-utils \
-make \
-nginx \
-openssh-client \
-perl-base \
-python \
-ruby \
-ruby-dev \
-unzip \
-xsltproc
+  bash \
+  build-essential \
+  curl \
+  cmake \
+  git \
+  libnss-wrapper \
+  libxml2-dev \
+  libxml2-utils \
+  make \
+  nginx \
+  openssh-client \
+  perl-base \
+  python \
+  ruby \
+  ruby-dev \
+  unzip \
+  xsltproc
 
 # We mount this log directory as tmp directory so we can't have
 # files there.
 RUN rm -rf /var/log/nginx
 
 RUN gem install --no-document \
-asciidoctor:1.5.8 \
-asciidoctor-diagram:1.5.12 \
-asciimath:1.0.8 \
-thread_safe:0.3.6
+  asciidoctor:1.5.8 \
+  asciidoctor-diagram:1.5.12 \
+  asciimath:1.0.8 \
+  thread_safe:0.3.6