misc: go 1.15 -> 1.16 (closes #1398)

BUILDING

@@ -1,6 +1,6 @@
 To build Perkeep:
 
-1) Install Go 1.15 or later.
+1) Install Go 1.16 or later.
 
 2) cd to the root of the Perkeep source (where this file is)
 

Dockerfile

@@ -22,11 +22,11 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
 		pkg-config \
 		libsqlite3-dev
 
-ENV GOLANG_VERSION 1.15.7
+ENV GOLANG_VERSION 1.16.6
 
 WORKDIR /usr/local
 RUN wget -O go.tgz https://dl.google.com/go/go${GOLANG_VERSION}.linux-amd64.tar.gz
-RUN echo "0d142143794721bb63ce6c8a6180c4062bcf8ef4715e7d6d6609f3a8282629b3 go.tgz" | sha256sum -c -
+RUN echo "be333ef18b3016e9d7cb7b1ff1fdb0cac800ca0be4cf2290fe613b3d069dfe0d go.tgz" | sha256sum -c -
 RUN tar -zxvf go.tgz
 
 ENV GOROOT /usr/local/go

misc/docker/go/Dockerfile

@@ -7,7 +7,7 @@ RUN apt-get -y --no-install-recommends install ca-certificates libc6-dev
 RUN apt-get -y --no-install-recommends install git
 
 # Get Go stable release
-ENV GOLANG_VERSION 1.15.3
+ENV GOLANG_VERSION 1.16.6
 WORKDIR /tmp
 RUN curl -O https://storage.googleapis.com/golang/go${GOLANG_VERSION}.linux-amd64.tar.gz
 RUN echo '010a88df924a81ec21b293b5da8f9b11c176d27c0ee3962dc1738d2352d3c02d  go'${GOLANG_VERSION}'.linux-amd64.tar.gz' | sha256sum -c

website/content/download.md

@@ -14,7 +14,7 @@ Windows), skip this section.
 [Download and install Go](http://golang.org/doc/install) if you don't
 have that installed already. As of revision
 [cb96bb8bd3](https://github.com/perkeep/perkeep/commit/cb96bb8bd32ce5f1a882b6d06a869a1a1925c57d),
-Perkeep requires [Go 1.15 or newer](https://golang.org/dl/).
+Perkeep requires [Go 1.16 or newer](https://golang.org/dl/).
 
     $ cd perkeep.org
     $ go run make.go