Nodejs downgraded to 12.18.4

Visual-Regression-Tracker/Visual-Regression-Tracker#137

Author: pashidlos

Dockerfile

@@ -19,7 +19,7 @@ COPY src ./src
 RUN npm run build
 
 # TODO use node-alpine when supported by prisma2 https://github.com/prisma/prisma2/issues/702
-FROM node:12-alpine
+FROM node:12.18.4-alpine
 COPY --from=builder /app/node_modules ./node_modules
 COPY --from=builder /app/package*.json ./
 COPY --from=builder /app/dist ./dist

prisma/Dockerfile

@@ -1,4 +1,4 @@
-FROM node:12-alpine
+FROM node:12.18.4-alpine
 
 RUN apk add --no-cache bash