Merge pull request #988 from input-output-hk/artur/update-building-ru…

…nning-docs-with-cabal

Add cabal build instruction to docs

doc/building-running.md

@@ -34,6 +34,30 @@ nix-build -A scripts.mainnet.node -o mainnet-node-local
 ```
 
 ### Set up and run the db-sync node
+
+- with cabal:
+
+```
+git clone https://github.com/input-output-hk/cardano-db-sync
+cd cardano-db-sync
+cabal build cardano-db-sync
+PGPASSFILE=config/pgpass-mainnet cabal run cardano-db-sync -- \
+    --config config/mainnet-config.yaml \
+    --socket-path ../cardano-node/state-node-mainnet/node.socket \
+    --state-dir ledger-state/mainnet \
+    --schema-dir schema/
+```
+
+to find `cardano-db-sync` executable location use:
+
+```
+find . -name cardano-db-sync -executable -type f
+./dist-newstyle/build/x86_64-linux/ghc-8.10.4/cardano-db-sync-12.0.0/build/cardano-db-sync/cardano-db-sync
+```
+
+
+- with nix:
+
 ```
 git clone https://github.com/input-output-hk/cardano-db-sync
 cd cardano-db-sync