refactor: Dockerfile with versions for Dependabot

Signed-off-by: Dmitriy Safronov <zimniy@cyberbrain.pw>

Dockerfile

-# VERSIONS
-ARG NODE_VERSION=20.13.1
-ARG NGINX_VERSION=1.26.0
-
 # --------------> The builder image
-FROM node:$NODE_VERSION AS builder
+FROM node:20.13.1 AS builder
 ENV NODE_ENV=production
 WORKDIR /app
 # Install NPM with version
-ARG NPM_VERSION=10.8.0
-RUN npm install -g npm@$NPM_VERSION
+RUN npm install -g npm@10.8.0
 # Install dependencies
 COPY package*.json ./
 ARG NPM_TOKEN
@@ -18,8 +13,8 @@ RUN echo "//registry.npmjs.org/:_authToken=$NPM_TOKEN" > .npmrc && \
 # Build app
 COPY . .
 RUN npm run build
- 
+
 # --------------> The production image
-FROM nginxinc/nginx-unprivileged:$NGINX_VERSION AS production
+FROM nginxinc/nginx-unprivileged:1.26.0 AS production
 # Copy built assets from `builder` image
 COPY --from=builder /app/build/ /usr/share/nginx/html/