extract BLOCKTANK_SERVER

Author: piotr-iohk

.github/workflows/regtest-mine.yml

@@ -5,6 +5,10 @@ on:
     - cron: '0 2 * * *' # 2 AM UTC daily
   workflow_dispatch:
     inputs:
+      blocktank_server:
+        description: Blocktank base URL
+        required: true
+        default: 'https://api.stag0.blocktank.to/blocktank/api/v2'
       block_count:
         description: Number of regtest blocks to mine
         required: true
@@ -15,8 +19,9 @@ jobs:
     runs-on: ubuntu-latest
     env:
       BLOCK_COUNT: ${{ github.event_name == 'workflow_dispatch' && github.event.inputs.block_count || '1' }}
+      BLOCKTANK_SERVER: ${{ github.event_name == 'workflow_dispatch' && github.event.inputs.blocktank_server || 'https://api.stag0.blocktank.to/blocktank/api/v2' }}
     steps:
-      - name: Validate block count
+      - name: Validate params
         run: |
           if [[ -z "${BLOCK_COUNT}" ]]; then
             echo "BLOCK_COUNT is empty" >&2
@@ -30,11 +35,15 @@ jobs:
             echo "BLOCK_COUNT must be greater than zero" >&2
             exit 1
           fi
+          if [[ -z "${BLOCKTANK_SERVER}" ]]; then
+            echo "BLOCKTANK_SERVER is empty" >&2
+            exit 1
+          fi
       - name: Mine regtest blocks
         run: |
           echo "Mining ${BLOCK_COUNT} block(s) on regtest…"
           curl --fail --silent --show-error \
             -X POST \
-            https://api.stag0.blocktank.to/blocktank/api/v2/regtest/chain/mine \
+            "${BLOCKTANK_SERVER}/regtest/chain/mine" \
             -H 'Content-Type: application/json' \
             -d "{\"count\": ${BLOCK_COUNT}}"