[price-pusher] Fix docker problem (#720)

price_pusher/Dockerfile

@@ -7,6 +7,7 @@ WORKDIR /home/node/
 USER 1000
 
 # local dependencies
+COPY --chown=1000:1000 target_chains/ethereum/sdk/solidity target_chains/ethereum/sdk/solidity
 COPY --chown=1000:1000 price_service/client/js price_service/client/js
 COPY --chown=1000:1000 price_service/sdk/js price_service/sdk/js