zshrc: godoc workaround

golang/go#26827 (comment)

zshrc

@@ -147,6 +147,23 @@ sdcard() {
     sudo dd of=/dev/disk/by-id/usb-Generic-_USB3.0_CRW_-SD_201006010301-0:0 bs=64k oflag=dsync status=progress if="$1"
 }
 
+function godoc() {
+  if [ ! -f "$(pwd)/go.mod" ]
+  then
+    echo "error: go.mod not found" >&2
+    return
+  fi
+
+  module=$(sed -n 's/^module \(.*\)/\1/p' go.mod)
+  docker run \
+    --rm \
+    -e "GOPATH=/tmp/go" \
+    -p 127.0.0.1:7070:6060 \
+    -v $(pwd):/tmp/go/src/$module \
+    golang \
+    bash -c "echo http://localhost:6060/pkg/$module && godoc -http=:6060"
+}
+
 # Edit a temporary file with my template for a C proof-of-concept
 alias cpoc='cd /tmp && FN=$(mktemp --suffix=.c) && cp ~/configfiles/poc-template.c $FN && vi $FN && echo "Proof-of-concept stored in $FN"'