Use ko to build the container image

.github/workflows/docker.yml

@@ -7,10 +7,6 @@ on:
   pull_request:
     branches: [ 'main' ]
 
-env:
-  REGISTRY: ghcr.io
-  IMAGE_NAME: ${{ github.repository }}
-
 jobs:
   build-and-push-image:
     runs-on: ubuntu-latest
@@ -21,39 +17,21 @@ jobs:
 
     steps:
     - uses: actions/checkout@v3
-
-    - name: Setup Docker buildx
-      uses: docker/setup-buildx-action@8c0edbc76e98fa90f69d9a2c020dcb50019dc325 # v2.2.1
-
-    - name: Log into registry ${{ env.REGISTRY }}
-      uses: docker/login-action@f4ef78c080cd8ba55a85445d5b36e214a81df20a # v2.1.0
-      if: github.event_name != 'pull_request'
-      with:
-        registry: ${{ env.REGISTRY }}
-        username: ${{ github.actor }}
-        password: ${{ secrets.GITHUB_TOKEN }}
-
-    - name: Extract Docker metadata
-      id: meta
-      uses: docker/metadata-action@57396166ad8aefe6098280995947635806a0e6ea # v4.1.1
+    - uses: actions/setup-go@v3
       with:
-        images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+        go-version: '>=1.19'
+    - uses: imjasonh/[email protected]
 
-    - name: Build and push Docker image
-      id: build-and-push
-      uses: docker/build-push-action@c56af957549030174b10d6867f20e78cfd7debc5 # v3.2.0
-      with:
-        context: .
-        push: ${{ github.event_name != 'pull_request' }}
-        tags: ${{ steps.meta.outputs.tags }}
-        labels: ${{ steps.meta.outputs.labels }}
-
-    # Sign the Docker image
     - name: Install cosign
       if: github.event_name != 'pull_request'
       uses: sigstore/cosign-installer@9becc617647dfa20ae7b1151972e9b3a2c338a2b #v2.8.1
-    - name: Sign the published Docker image
-      if: github.event_name != 'pull_request'
+    - if: github.event_name != 'pull_request'
       env:
-        COSIGN_EXPERIMENTAL: "true"
-      run: cosign sign ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}@${{ steps.build-and-push.outputs.digest }}
+        COSIGN_EXPERIMENTAL: true
+      run: cosign sign $(ko build ./cmd/golink --bare)
+
+    - if: github.event_name == 'pull_request'
+      env:
+        KO_DOCKER_REPO: ko.local
+      run: ko build ./cmd/golink
+

README.md

@@ -62,7 +62,9 @@ Two pieces of data should be on persistent volumes:
 
 In the docker image, both are stored in `/root`, so you can mount a persistent volume at /root:
 
-    docker run -v /persistant/data:/root ghcr.io/tailscale/golink:main
+    docker run -v /persistant/data:/root ghcr.io/tailscale/golink:main \
+        --sqlitedb /root/golink.db \
+        --verbose
 
 No ports need to be exposed, whether running as a binary or in docker.
 golink will listen on port 80 on the tailscale interface, so can be accessed at http://go/.