Improve docker image by using .dockerignore

.dockerignore

@@ -0,0 +1,15 @@
+node_modules
+
+# Hardhat files
+/cache
+/artifacts
+
+# TypeChain files
+/typechain
+/typechain-types
+
+# solidity-coverage files
+/coverage
+/coverage.json
+
+/flatten

Dockerfile

@@ -1,12 +1,8 @@
 FROM node:20-alpine
 WORKDIR /app
 
-COPY ["package.json", "yarn.lock", "./"]
-
-RUN yarn
-
 COPY . .
 
-RUN yarn build
+RUN yarn && yarn build
 
 ENTRYPOINT ["yarn", "start"]

package.json

@@ -14,6 +14,7 @@
   "files": [
     "contracts",
     "src",
+    ".dockerignore",
     ".eslintrc.js",
     ".gitignore",
     "docker-compose.yml",