Hugo v0.81.0

also force AMD64 base image (ran into problems with Docker on Apple Silicon since there's no ARM Linux version of Hugo)

Dockerfile

@@ -1,9 +1,9 @@
 # Hugo doesn't require Go to run, *except* if you're using Hugo Modules. It's
 # much easier to install Node on the Go base image than vice-versa.
-FROM golang:1.15-alpine
+FROM amd64/golang:1.16-alpine
 
 # the following version can be overridden at image build time with --build-arg
-ARG HUGO_VERSION=0.77.0
+ARG HUGO_VERSION=0.81.0
 # remove/comment the following line completely to build with vanilla Hugo:
 ARG HUGO_EXTENDED=1
 
@@ -12,6 +12,9 @@ LABEL repository="https://github.com/jakejarvis/hugo-docker"
 LABEL homepage="https://jarv.is/"
 LABEL maintainer="Jake Jarvis <jake@jarv.is>"
 
+# https://docs.github.com/en/free-pro-team@latest/packages/managing-container-images-with-github-container-registry/connecting-a-repository-to-a-container-image#connecting-a-repository-to-a-container-image-on-the-command-line
+LABEL org.opencontainers.image.source https://github.com/jakejarvis/hugo-docker
+
 # only install libc6-compat & libstdc++ if we're building extended Hugo
 # https://gitlab.com/yaegashi/hugo/commit/22f0d5cbd6114210ba7835468facbdee60609aa2
 RUN apk update && \
@@ -25,8 +28,10 @@ RUN apk update && \
       py3-pip \
       ruby \
       ${HUGO_EXTENDED:+libc6-compat libstdc++} && \
-    update-ca-certificates && \
-    npm install --global postcss postcss-cli autoprefixer @babel/core @babel/cli && \
+    update-ca-certificates
+
+# download Hugo and miscellaneous optional dependencies
+RUN npm install --global postcss postcss-cli autoprefixer @babel/core @babel/cli && \
     pip3 install --upgrade Pygments==2.* && \
     gem install asciidoctor && \
     wget https://github.com/gohugoio/hugo/releases/download/v${HUGO_VERSION}/hugo_${HUGO_EXTENDED:+extended_}${HUGO_VERSION}_Linux-64bit.tar.gz && \
@@ -37,6 +42,11 @@ RUN apk update && \
     chmod +x /usr/local/bin/hugo && \
     rm -rf hugo_* LICENSE README.md
 
+# fix potential stack size problems on Alpine
+# https://github.com/microsoft/vscode-dev-containers/blob/fb63f7e016877e13535d4116b458d8f28012e87f/containers/hugo/.devcontainer/Dockerfile#L19
+RUN go get github.com/yaegashi/muslstack && \
+    muslstack -s 0x800000 /usr/local/bin/hugo
+
 # verify everything's OK, exit otherwise
 RUN hugo version && \
     hugo env && \