Go 1.16, output Go version and update lib/pq

Dockerfile

@@ -1,8 +1,14 @@
-FROM golang:1.15
+FROM golang:1.16
 
 WORKDIR /app
-COPY . /app/
-RUN go get github.com/lib/pq
+COPY go.mod go.mod
+COPY go.sum go.sum
+
+RUN go mod download
+
+COPY main.go main.go
+COPY templates templates
+COPY public public
 
 EXPOSE 3000
 CMD ["go","run","main.go"]

go.mod

@@ -2,4 +2,4 @@ module github.com/anynines/a9s-postgresql-app
 
 go 1.15
 
-require github.com/lib/pq v1.2.0
+require github.com/lib/pq v1.9.0

go.sum

@@ -1,2 +1,2 @@
-github.com/lib/pq v1.2.0 h1:LXpIM/LZ5xGFhOpXAQUIMM1HdyqzVYM13zNdjCEEcA0=
-github.com/lib/pq v1.2.0/go.mod h1:5WUZQaWbwv1U+lTReE5YruASi9Al49XbQIvNi/34Woo=
+github.com/lib/pq v1.9.0 h1:L8nSXQQzAYByakOFMTwpjRoHsMJklur4Gi59b6VivR8=
+github.com/lib/pq v1.9.0/go.mod h1:AlVN5x4E4T544tWzH6hKfbfQvm3HdbOxrmggDNAPY9o=

main.go

@@ -8,6 +8,7 @@ import (
 	"log"
 	"net/http"
 	"os"
+	"runtime"
 	"strconv"
 
 	_ "github.com/lib/pq"
@@ -228,6 +229,8 @@ func renderBlogPosts(w http.ResponseWriter, r *http.Request) {
 }
 
 func main() {
+	log.Println(runtime.Version())
+
 	initTemplates()
 	initDatabase()