diff --git a/modules/sdk_signer/Dockerfile b/modules/sdk_signer/Dockerfile
index 0132378d..459a31f7 100644
--- a/modules/sdk_signer/Dockerfile
+++ b/modules/sdk_signer/Dockerfile
@@ -1,35 +1,17 @@
-FROM node:20-alpine AS base
-
-# Install production dependencies only by default
-ENV NODE_ENV=production
-
-WORKDIR /app
-
-# Install build dependencies
-FROM base AS deps
-ENV NODE_ENV=development
-RUN apk add --no-cache python3 make g++
-COPY package.json package-lock.json* ./
+FROM node:18-slim AS builder
+WORKDIR /usr/src/app
+COPY package.json package-lock.json ./
 RUN npm ci
-
-# Build TypeScript
-FROM deps AS build
 COPY tsconfig.json ./
 COPY src ./src
 COPY pkg ./pkg
 RUN npm run build
 
-# Runtime image
-FROM base AS runner
-WORKDIR /app
-ENV NODE_ENV=production
-RUN addgroup -S nodejs && adduser -S nodejs -G nodejs
-COPY --from=deps /app/node_modules ./node_modules
-COPY --from=build /app/dist ./dist
-COPY --from=build /app/pkg ./pkg
+FROM node:18-slim
+WORKDIR /usr/src/app
+COPY --from=builder /usr/src/app/dist ./dist
+COPY --from=builder /usr/src/app/package.json ./package.json
+COPY --from=builder /usr/src/app/node_modules ./node_modules
 EXPOSE 9090
-USER nodejs
-CMD ["node", "dist/index.js"]
-
-
-
+ENV PORT=9090
+CMD ["node","dist/index.js"]
diff --git a/scripts/build_all_images.sh b/scripts/build_all_images.sh
index 0b3324cf..e93ad2cf 100755
--- a/scripts/build_all_images.sh
+++ b/scripts/build_all_images.sh
@@ -9,6 +9,7 @@ while IFS= read -r df; do
   rel=${dir#"$BASE_DIR/"}
   img_tag="4nk-node-"$(echo "$rel" | tr '/' '-')":latest"
   echo "Building $img_tag from $dir"
+  # signer image will always be built
   docker build -t "$img_tag" "$dir"
 done < <(find "$BASE_DIR" -name Dockerfile -print)