Add Optimism to pre-release workflow

.github/workflows/prerelease.yml

@@ -90,6 +90,27 @@ jobs:
             RELEASE_VERSION=${{ env.RELEASE_VERSION }}
             CHAIN_TYPE=zksync
 
+      - name: Build and push Docker image for Optimism
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          file: ./docker/Dockerfile
+          push: true
+          tags: blockscout/blockscout-optimism:${{ env.RELEASE_VERSION }}-alpha.${{ inputs.number }}
+          platforms: |
+            linux/amd64
+          build-args: |
+            CACHE_EXCHANGE_RATES_PERIOD=
+            API_V1_READ_METHODS_DISABLED=false
+            DISABLE_WEBAPP=false
+            API_V1_WRITE_METHODS_DISABLED=false
+            CACHE_TOTAL_GAS_USAGE_COUNTER_ENABLED=
+            ADMIN_PANEL_ENABLED=false
+            CACHE_ADDRESS_WITH_BALANCES_UPDATE_INTERVAL=
+            BLOCKSCOUT_VERSION=v${{ env.RELEASE_VERSION }}-beta.+commit.${{ env.SHORT_SHA }}
+            RELEASE_VERSION=${{ env.RELEASE_VERSION }}
+            CHAIN_TYPE=optimism
+
       - name: Build & Push Docker image
         uses: docker/build-push-action@v5
         with: