diff --git a/backend.Dockerfile b/backend.Dockerfile
index a326d3e..a83a988 100644
--- a/backend.Dockerfile
+++ b/backend.Dockerfile
@@ -1,9 +1,11 @@
-FROM golang:1.17-alpine AS backend
+# FROM golang:1.17-alpine AS backend
+# AWS CodeBuild fails due to Docker's pull rate limit.
+FROM public.ecr.aws/bitnami/golang:1.17 AS backend
 WORKDIR /go/src/app
-COPY go.* .
+COPY go.* ./
 COPY internal ./internal
 RUN go mod download
-COPY cmd/backend .
+COPY cmd/backend ./
 RUN CGO_ENABLED=0 GOOS=linux go build -ldflags '-s' -o backend .
 
 FROM scratch
diff --git a/cache.Dockerfile b/cache.Dockerfile
index b92ea28..d63ea9e 100644
--- a/cache.Dockerfile
+++ b/cache.Dockerfile
@@ -1,4 +1,5 @@
 # FROM golang:1.17-alpine AS cache
+# AWS CodeBuild fails due to Docker's pull rate limit.
 FROM public.ecr.aws/bitnami/golang:1.17 AS cache
 WORKDIR /go/src/app
 COPY go.* ./
diff --git a/database.Dockerfile b/database.Dockerfile
index 73b4c1e..2faa5d1 100644
--- a/database.Dockerfile
+++ b/database.Dockerfile
@@ -1,4 +1,5 @@
 # FROM golang:1.17-alpine AS database
+# AWS CodeBuild fails due to Docker's pull rate limit.
 FROM public.ecr.aws/bitnami/golang:1.17 AS database
 WORKDIR /go/src/app
 COPY go.* ./
diff --git a/server.Dockerfile b/server.Dockerfile
index 81681e4..2cb20e0 100644
--- a/server.Dockerfile
+++ b/server.Dockerfile
@@ -1,4 +1,5 @@
 # FROM node:14-alpine AS react
+# AWS CodeBuild fails due to Docker's pull rate limit.
 FROM public.ecr.aws/bitnami/node:16 AS react
 WORKDIR /usr/src/app
 COPY web/react/package*.json ./