Update and use drone CI

.drone.yml

@@ -0,0 +1,24 @@
+kind: pipeline
+name: default
+
+platform:
+    os: linux
+    arch: amd64
+
+steps:
+  - name: publish
+    image: plugins/docker
+    settings:
+      username:
+        from_secret: docker_username
+      password:
+        from_secret: docker_password
+      repo: quay.io/jlelse/hugo
+      registry: quay.io
+      auto_tag: true
+    when:
+        branch:
+            - master
+        event:
+            exclude:
+            - pull_request

Dockerfile

@@ -1,25 +1,17 @@
-FROM golang:1.14-alpine AS build
+FROM golang:1.14-alpine3.11 AS build
 
-RUN echo "" > /etc/apk/repositories && \
-  echo "http://ftp.halifax.rwth-aachen.de/alpine/latest-stable/main/" >> /etc/apk/repositories && \
-  echo "http://ftp.halifax.rwth-aachen.de/alpine/latest-stable/community/" >> /etc/apk/repositories && \
-  apk update && \
-  apk --no-cache add --no-cache gcc g++ musl-dev git
+RUN apk add -X http://ftp.halifax.rwth-aachen.de/alpine/latest-stable/main/ -X http://ftp.halifax.rwth-aachen.de/alpine/latest-stable/community/ --no-cache gcc g++ musl-dev git
 
 WORKDIR /hugo
 
-RUN git clone --branch v0.68.3 https://github.com/gohugoio/hugo.git .
+RUN git clone --branch v0.69.2 https://github.com/gohugoio/hugo.git .
 RUN go build -v --tags extended
 
-FROM golang:1.14-alpine
+FROM alpine:3.11
 
 COPY --from=build /hugo/hugo /usr/bin/hugo
 
-RUN echo "" > /etc/apk/repositories && \
-  echo "http://ftp.halifax.rwth-aachen.de/alpine/latest-stable/main/" >> /etc/apk/repositories && \
-  echo "http://ftp.halifax.rwth-aachen.de/alpine/latest-stable/community/" >> /etc/apk/repositories && \
-  apk update && \
-  apk --no-cache add --no-cache ca-certificates libc6-compat libstdc++ git
+RUN apk add -X http://ftp.halifax.rwth-aachen.de/alpine/latest-stable/main/ -X http://ftp.halifax.rwth-aachen.de/alpine/latest-stable/community/ --no-cache ca-certificates libc6-compat libstdc++ git go
 
 VOLUME /site
 WORKDIR /site