bring migrations in line with dev

Dockerfile

@@ -4,9 +4,21 @@ WORKDIR /build
 COPY . .
 RUN go get -d -v ./...
 RUN go build -o app -v
+RUN GOBIN=/build/ go install github.com/jackc/tern/v2@latest
 
 # final stage
 FROM alpine:latest
+
+ARG SOURCE_BRANCH
+ARG SOURCE_COMMIT
+ARG IMAGE_NAME
+ENV SOURCE_BRANCH $SOURCE_BRANCH
+ENV SOURCE_COMMIT $SOURCE_COMMIT
+ENV IMAGE_NAME $IMAGE_NAME
+
+ENV TERN_CONFIG /dist/tern.docker.conf
+ENV TERN_MIGRATIONS /dist/etc/snapstore/migrations
+
 WORKDIR /dist
 COPY --from=build /build .
 EXPOSE 3000