Update build tools (postgres 16.0)

.github/workflows/go.yml

@@ -9,11 +9,11 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        go: ['1.19', '1.20']
+        go: ['1.20', '1.21']
 
     services:
       postgres:
-        image: postgres:15.0
+        image: postgres:16.0
         env:
           POSTGRES_USER: dcrpooluser
           POSTGRES_PASSWORD: 12345
@@ -27,13 +27,13 @@ jobs:
           - 5432:5432
     steps:
       - name: Set up Go
-        uses: actions/setup-go@fac708d6674e30b6ba41289acaab6d4b75aa0753 #v4.0.1
+        uses: actions/setup-go@93397bea11091df50f3d7e59dc26a7711a8bcfbe #v4.1.0
         with:
           go-version: ${{ matrix.go }}
       - name: Check out source
-        uses: actions/checkout@c85c95e3d7251135ab7dc9ce3241c5835cc595a9 #v3.5.3
+        uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac #v4.0.0
       - name: Install Linters
-        run: "curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s -- -b $(go env GOPATH)/bin v1.53.3"
+        run: "curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s -- -b $(go env GOPATH)/bin v1.54.2"
       - name: Build
         run: go build ./...
       - name: Test

docs/postgres.md

@@ -26,6 +26,12 @@ automatically by dcrpool.
     CREATE DATABASE
     ```
 
+    Alternatively the test suite can be run against a database created in a Docker container using the following one-liner:
+
+    ```no-highlight
+    docker run -d --rm -e POSTGRES_USER=dcrpooluser -e POSTGRES_PASSWORD=12345 -e POSTGRES_DB=dcrpooltestdb -p 5432:5432 postgres:16.0
+    ```
+
 1. Add the database connection details to the dcrpool config file.
 
     ```no-highlight