sqlx: make migration location configurable

sqlx/Dockerfile

@@ -10,4 +10,4 @@ RUN cargo install sqlx-cli \
 FROM alpine
 COPY --from=build /usr/local/cargo/bin/sqlx /usr/local/bin/sqlx
 
-CMD sqlx migrate run --source /migrations
+CMD sqlx migrate run --source $MIGRATIONS

sqlx/action.yml

@@ -4,8 +4,12 @@ inputs:
   database-url:
     description: Where to find the database
     required: true
+  migrations:
+    description: Where to find the migrations
+    default: /migrations
 runs:
   using: docker
   image: docker://git.tfld.dev/tfld/tools-sqlx
   env:
     DATABASE_URL: ${{ inputs.database-url }}
+    MIGRATIONS: ${{ inputs.migrations }}