Make docker-server binary fixed between unit/gunicorn images

We want it to be a full drop-in replacement

.github/actions/build-n-cache-image/action.yml

@@ -49,8 +49,8 @@ runs:
           with:
               buildx-fallback: false # buildx is so slow it's better to just fail
               file: production-unit.Dockerfile
-              tags: ${{ steps.emit.outputs.tag }}
-              platforms: linux/amd64
+              tags: posthog/posthog:unit-${{ github.sha }}
+              platforms: linux/amd64,linux/arm64
               build-args: COMMIT_HASH=${{ github.sha }}
               save: ${{ inputs.save }}
           env:

bin/docker-server-unit

@@ -1,6 +1,8 @@
 #!/bin/bash
 set -e
 
+./bin/migrate-check
+
 # To ensure we are able to expose metrics from multiple processes, we need to
 # provide a directory for `prometheus_client` to store a shared registry.
 export PROMETHEUS_MULTIPROC_DIR=$(mktemp -d)

bin/unit_metrics.py

@@ -42,7 +42,7 @@
 
 
 def application(environ, start_response):
-    connection = http.client.HTTPConnection("localhost:8081")
+    connection = http.client.HTTPConnection("localhost:8181")
     connection.request("GET", "/status")
     response = connection.getresponse()
 

production-unit.Dockerfile

@@ -295,6 +295,9 @@ COPY --chown=posthog:posthog posthog posthog/
 COPY --chown=posthog:posthog ee ee/
 COPY --chown=posthog:posthog hogvm hogvm/
 
+# Keep server command backwards compatible
+RUN cp ./bin/docker-server-unit ./bin/docker-server
+
 # Setup ENV.
 ENV NODE_ENV=production \
     CHROME_BIN=/usr/bin/chromium \

unit.json

@@ -6,7 +6,7 @@
         "*:8001": {
             "pass": "routes/metrics"
         },
-        "*:8081": {
+        "*:8181": {
             "pass": "routes/status"
         }
     },