updates

docker_files/github-dind/install-go

@@ -0,0 +1,37 @@
+#!/usr/bin/env sh 
+
+TARGETDIR=${GO_TARGET_DIR:="/usr/local/"}
+
+lookup_file() {
+	curl -sSL "https://go.dev/dl/?mode=json" |
+		jq -r '.[0].files[]
+       | select(.os == "'"$GOOS"'")
+       | select(.arch == "'"$GOARCH"'")
+       | .filename'
+}
+
+fetch() {
+	local filename
+	if [ $GO_VERS == "latest" ]; then
+	  filename="$(lookup_file)"
+  else
+	  filename="$GO_VERS.$GOOS-$GOARCH.tar.gz"
+	fi
+	[[ -z "$filename" ]] && echo "unable to fetch filename" 1>&2 && return 1
+	local path="/tmp/$filename"
+	[[ -n "$DOWNLOADS" ]] && [[ -d "$DOWNLOADS" ]] && path="$DOWNLOADS/$filename"
+	curl -L "https://go.dev/dl/$filename" -o "$path"
+	echo "$path"
+}
+
+install_latest_go() {
+	local dir="$1" path
+	[[ -z "$dir" ]] && dir="$TARGETDIR"
+	[[ -z "$dir" ]] && dir="$HOME/.local"
+	mkdir -p "$dir" 2>/dev/null
+	path="$(fetch)"
+	[[ -z "$path" ]] && echo "unable to fetch go tarball" 1>&2 && return 1
+	rm -rf "$dir/go" && tar -C "$dir" -xzf "$path"
+}
+
+install_latest_go "$@"