generate test mmdb files with go mmdbwriter.

.github/dependabot.yml

@@ -0,0 +1,11 @@
+version: 2
+updates:
+- package-ecosystem: gomod
+  directory: "/"
+  schedule:
+    interval: daily
+  open-pull-requests-limit: 10
+- package-ecosystem: "github-actions"
+  directory: "/"
+  schedule:
+    interval: daily

.github/workflows/codeql-analysis.yml

@@ -0,0 +1,52 @@
+name: "Code scanning - action"
+
+on:
+  push:
+    branches-ignore:
+      - 'dependabot/**'
+  pull_request:
+  schedule:
+    - cron: '0 11 * * 2'
+
+jobs:
+  CodeQL-Build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v4
+      with:
+        # We must fetch at least the immediate parents so that if this is
+        # a pull request then we can checkout the head.
+        fetch-depth: 2
+
+    # If this run was triggered by a pull request event, then checkout
+    # the head of the pull request instead of the merge commit.
+    - run: git checkout HEAD^2
+      if: ${{ github.event_name == 'pull_request' }}
+
+    # Initializes the CodeQL tools for scanning.
+    - name: Initialize CodeQL
+      uses: github/codeql-action/init@v2
+      with:
+        languages: go
+
+    # Autobuild attempts to build any compiled languages  (C/C++, C#, or Java).
+    # If this step fails, then you should remove it and run the build manually (see below)
+    - name: Autobuild
+      uses: github/codeql-action/autobuild@v2
+
+    # ℹ️ Command-line programs to run using the OS shell.
+    # 📚 https://git.io/JvXDl
+
+    # ✏️ If the Autobuild fails above, remove it and uncomment the following three lines
+    #    and modify them (or add more) to build your code if your project
+    #    uses a compiled language
+
+    #- run: |
+    #   make bootstrap
+    #   make release
+
+    - name: Perform CodeQL Analysis
+      uses: github/codeql-action/analyze@v2

.github/workflows/go.yml

@@ -0,0 +1,38 @@
+name: Go
+
+on:
+  push:
+  pull_request:
+  schedule:
+    - cron: '6 15 * * SUN'
+
+jobs:
+
+  build:
+    strategy:
+      matrix:
+        go-version: [1.20.x, 1.21.x]
+        # We don't test on macOS and windows as the database builds aren't
+        # repeatable there for some reason. As such, tests fail. It'd
+        # probably be worth looking into this at some point.
+        platform: [ubuntu-latest]
+    runs-on: ${{ matrix.platform }}
+    name: "Build ${{ matrix.go-version }} test on ${{ matrix.platform }}"
+    steps:
+      - name: Set up Go 1.x
+        uses: actions/setup-go@v4
+        with:
+          go-version: ${{ matrix.go-version }}
+        id: go
+
+      - name: Check out code into the Go module directory
+        uses: actions/checkout@v4
+
+      - name: Get dependencies
+        run: go get -v -t -d ./...
+
+      - name: Build
+        run: go build -v ./...
+
+      - name: Test
+        run: go test -race -v ./...

.github/workflows/golangci-lint.yml

@@ -0,0 +1,21 @@
+name: golangci-lint
+
+on:
+  push:
+  pull_request:
+  schedule:
+    - cron: '6 15 * * SUN'
+
+jobs:
+  golangci:
+    name: lint
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/setup-go@v4
+        with:
+          go-version: 1.21
+      - uses: actions/checkout@v4
+      - name: golangci-lint
+        uses: golangci/golangci-lint-action@v3
+        with:
+          version: latest

.gitignore

@@ -1,3 +1,4 @@
 /_site
 .tidyall.d
 *.swp
+/cmd/write-test-data/write-test-data