diff --git a/.gitignore b/.gitignore
index 6ff6670..ef53537 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,4 +2,5 @@ tmp
 
 # editor and IDE paraphernalia
 .vscode
+.idea/
 **/.DS_Store
diff --git a/a12n-server/database.dockerfile b/a12n-server/database.dockerfile
index 964de6b..0a70765 100644
--- a/a12n-server/database.dockerfile
+++ b/a12n-server/database.dockerfile
@@ -1,4 +1,4 @@
-FROM mysql/mysql-server:8.0
+FROM mirror.gcr.io/mysql/mysql-server:8.0
 
 ENV MYSQL_DATABASE=a12nserver
 ENV MYSQL_USER=a12nserver
diff --git a/api-consumer/Dockerfile b/api-consumer/Dockerfile
index fdd151e..cfc2461 100644
--- a/api-consumer/Dockerfile
+++ b/api-consumer/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:latest
+FROM mirror.gcr.io/library/alpine:latest
 
 RUN apk update && apk add --no-cache bash curl
 
diff --git a/ip-location/Dockerfile b/ip-location/Dockerfile
index d79f087..e645724 100644
--- a/ip-location/Dockerfile
+++ b/ip-location/Dockerfile
@@ -1,4 +1,4 @@
-FROM ruby:3.1
+FROM mirror.gcr.io/library/ruby:3.1
 
 RUN bundle config --global frozen 1
 
diff --git a/matrix-quotes/Dockerfile b/matrix-quotes/Dockerfile
index 1c98ee8..97345d1 100644
--- a/matrix-quotes/Dockerfile
+++ b/matrix-quotes/Dockerfile
@@ -1,4 +1,4 @@
-FROM node:14
+FROM mirror.gcr.io/library/node:14
 
 WORKDIR /usr/src/app
 
diff --git a/news-api/Dockerfile b/news-api/Dockerfile
index 7368485..4e5f37e 100644
--- a/news-api/Dockerfile
+++ b/news-api/Dockerfile
@@ -1,4 +1,4 @@
-FROM ruby:2.7
+FROM mirror.gcr.io/library/ruby:2.7
 
 RUN bundle config --global frozen 1
 
diff --git a/talker-api/Dockerfile b/talker-api/Dockerfile
index 7368485..4e5f37e 100644
--- a/talker-api/Dockerfile
+++ b/talker-api/Dockerfile
@@ -1,4 +1,4 @@
-FROM ruby:2.7
+FROM mirror.gcr.io/library/ruby:2.7
 
 RUN bundle config --global frozen 1
 
diff --git a/talker-web/Dockerfile b/talker-web/Dockerfile
index 76d8585..f95de40 100644
--- a/talker-web/Dockerfile
+++ b/talker-web/Dockerfile
@@ -1,4 +1,4 @@
-FROM node:14
+FROM mirror.gcr.io/library/node:14
 
 WORKDIR /usr/src/app