chore(docker): upgrade build environment

Dockerfile

@@ -1,5 +1,5 @@
 #
-# Copyright (C) 2019  Josh Habdas <jhabdas@protonmail.com>
+# Copyright (C) 2019, 2020  Josh Habdas <jhabdas@protonmail.com>
 #
 # This file is part of After Dark.
 #
@@ -17,17 +17,17 @@
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 #
 
-# DOCKER-VERSION 19.03.5, build 633a0ea 
+# DOCKER-VERSION 19.03.8-ce, build afacb8b7f0
 
 # Specify build image
-ARG GO_VERSION=1.13.4
-ARG BUILD_TARGET=alpine3.10
+ARG GO_VERSION=1.14.3
+ARG BUILD_TARGET=alpine3.11
 
 # Pull builder base image
 FROM golang:${GO_VERSION}-${BUILD_TARGET} AS hugobuilder
 
 # Set hugo environment variables
-ENV HUGO_VERSION=0.61.0 \
+ENV HUGO_VERSION=0.71.0 \
     CGO_ENABLED=1 \
     GOOS=linux \
     GO111MODULE=on \

docs/content/feature/extended-builds.id.md

@@ -6,7 +6,7 @@ tags = ["docker", "container", "sass", "cloud", "ci"]
 features = ["code highlighter", "related content"]
 [[copyright]]
   owner = "Josh Habdas"
-  date = "2019"
+  date = "2019, 2020"
   license = "agpl-3.0-or-later"
 +++
 
@@ -22,7 +22,7 @@ Build container uses Alpine and includes `musl-dev` for high-performance. Update
 
 ```sh
 docker create -it --name temp f2b785583ce8 sh && \
-sudo docker cp temp:/hugo /usr/local/bin && \
+sudo docker cp temp:/usr/local/bin/hugo /usr/local/bin && \
 docker rm -fv temp
 ```
 

docs/content/feature/extended-builds.md

@@ -6,7 +6,7 @@ tags = ["docker", "container", "sass", "cloud", "ci"]
 features = ["code highlighter", "related content"]
 [[copyright]]
   owner = "Josh Habdas"
-  date = "2019"
+  date = "2019, 2020"
   license = "agpl-3.0-or-later"
 +++
 
@@ -22,7 +22,7 @@ Build container uses Alpine and includes `musl-dev` for high-performance. Update
 
 ```sh
 docker create -it --name temp f2b785583ce8 sh && \
-sudo docker cp temp:/hugo /usr/local/bin && \
+sudo docker cp temp:/usr/local/bin/hugo /usr/local/bin && \
 docker rm -fv temp
 ```