diff --git a/.dockerignore b/.dockerignore
index c379c459..7b78e880 100644
--- a/.dockerignore
+++ b/.dockerignore
@@ -3,6 +3,5 @@
 
 # allow only what we need
 !commafeed-server/target/commafeed.jar
-!commafeed-server/config.docker-warmup.yml
 !commafeed-server/config.yml.example
 
diff --git a/Dockerfile b/Dockerfile
index 105b0750..1b82ad6a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -5,15 +5,15 @@ EXPOSE 8082
 RUN mkdir -p /commafeed/data
 VOLUME /commafeed/data
 
-RUN apt update && apt install -y wait-for-it && apt clean
-
-ENV JAVA_TOOL_OPTIONS -Djava.net.preferIPv4Stack=true -Xtune:virtualized -Xminf0.05 -Xmaxf0.1
-
-COPY commafeed-server/config.docker-warmup.yml .
 COPY commafeed-server/config.yml.example config.yml
 COPY commafeed-server/target/commafeed.jar .
 
-# build openj9 shared classes cache to improve startup time
-RUN sh -c 'java -Xshareclasses -jar commafeed.jar server config.docker-warmup.yml &' ; wait-for-it -t 600 localhost:8088 -- pkill java ; rm -rf config.warmup.yml
-
-CMD ["java", "-Xshareclasses", "-jar", "commafeed.jar", "server", "config.yml"]
+CMD ["java", \
+    "-Djava.net.preferIPv4Stack=true", \
+    "-Xtune:virtualized", \
+    "-Xminf0.05", \
+    "-Xmaxf0.1", \
+    "-jar", \
+    "commafeed.jar", \
+    "server", \
+    "config.yml"]
diff --git a/commafeed-server/config.docker-warmup.yml b/commafeed-server/config.docker-warmup.yml
deleted file mode 100644
index 7a120526..00000000
--- a/commafeed-server/config.docker-warmup.yml
+++ /dev/null
@@ -1,154 +0,0 @@
-# CommaFeed settings
-# ------------------
-app:
-  # url used to access commafeed
-  publicUrl: http://localhost:8088/
-
-  # whether to expose a robots.txt file that disallows web crawlers and search engine indexers
-  hideFromWebCrawlers: true
-  
-  # whether to allow user registrations
-  allowRegistrations: true
-
-  # whether to enable strict password validation (1 uppercase char, 1 lowercase char, 1 digit, 1 special char)
-  strictPasswordPolicy: true
-  
-  # create a demo account the first time the app starts
-  createDemoAccount: true
-  
-  # put your google analytics tracking code here
-  googleAnalyticsTrackingCode:
-  
-  # put your google server key (used for youtube favicon fetching)
-  googleAuthKey:
-  
-  # number of http threads
-  backgroundThreads: 3
-  
-  # number of database updating threads
-  databaseUpdateThreads: 1
-
-  # rows to delete per query while cleaning up old entries
-  databaseCleanupBatchSize: 100
-
-  # settings for sending emails (password recovery)
-  smtpHost: localhost
-  smtpPort: 25
-  smtpTls: false
-  smtpUserName: user
-  smtpPassword: pass
-  smtpFromAddress:
-
-  # Graphite Metric settings
-  # Allows those who use Graphite to have CommaFeed send metrics for graphing (time in seconds)
-  graphiteEnabled: false
-  graphitePrefix: "test.commafeed"
-  graphiteHost: "localhost"
-  graphitePort: 2003
-  graphiteInterval: 60
-  
-  # whether this commafeed instance has a lot of feeds to refresh
-  # leave this to false in almost all cases
-  heavyLoad: false
-  
-  # minimum amount of time commafeed will wait before refreshing the same feed
-  refreshIntervalMinutes: 5
-
-  # if enabled, images in feed entries will be proxied through the server instead of accessed directly by the browser
-  # useful if commafeed is usually accessed through a restricting proxy  
-  imageProxyEnabled: true
-  
-  # database query timeout (in milliseconds), 0 to disable
-  queryTimeout: 0
-  
-  # time to keep unread statuses (in days), 0 to disable
-  keepStatusDays: 0
-  
-  # entries to keep per feed, old entries will be deleted, 0 to disable
-  maxFeedCapacity: 500
-
-  # entries older than this will be deleted, 0 to disable
-  maxEntriesAgeDays: 365
-
-  # limit the number of feeds a user can subscribe to, 0 to disable
-  maxFeedsPerUser: 0
-
-  # don't parse feeds that are too large to prevent memory issues
-  maxFeedResponseSize: 5M
-
-  # cache service to use, possible values are 'noop' and 'redis'
-  cache: noop
-  
-  # announcement string displayed on the main page
-  announcement:
-  
-  # user-agent string that will be used by the http client, leave empty for the default one
-  userAgent:
-
-  # enable websocket connection so the server can notify the web client that there are new entries for your feeds
-  websocketEnabled: true
-
-  # interval at which the client will send a ping message on the websocket to keep the connection alive
-  websocketPingInterval: 15m
-
-  # if websocket is disabled or the connection is lost, the client will reload the feed tree at this interval
-  treeReloadInterval: 30s
-
-# Database connection
-# -------------------  
-# for MariaDB
-# driverClass is org.mariadb.jdbc.Driver
-# url is jdbc:mariadb://localhost/commafeed?autoReconnect=true&failOverReadOnly=false&maxReconnects=20&rewriteBatchedStatements=true&timezone=UTC
-#
-# for MySQL
-# driverClass is com.mysql.cj.jdbc.Driver
-# url is jdbc:mysql://localhost/commafeed?autoReconnect=true&failOverReadOnly=false&maxReconnects=20&rewriteBatchedStatements=true&timezone=UTC
-#
-# for PostgreSQL
-# driverClass is org.postgresql.Driver
-# url is jdbc:postgresql://localhost:5432/commafeed
-
-database:
-  driverClass: org.h2.Driver
-  url: jdbc:h2:mem:commafeed
-  user: sa
-  password: sa
-  properties:
-    charSet: UTF-8
-  validationQuery: "/* CommaFeed Health Check */ SELECT 1"
-
-server:
-  applicationConnectors:
-    - type: http
-      port: 8088
-
-logging:
-  level: INFO
-  loggers:
-    com.commafeed: DEBUG
-    liquibase: INFO
-    org.hibernate.SQL: INFO # or ALL for sql debugging
-    org.hibernate.engine.internal.StatisticalLoggingSessionEventListener: WARN
-  appenders:
-    - type: console
-    - type: file
-      currentLogFilename: log/commafeed.log
-      threshold: ALL
-      archive: true
-      archivedLogFilenamePattern: log/commafeed-%d.log
-      archivedFileCount: 5
-      timeZone: UTC
-
-# Redis pool configuration
-# (only used if app.cache is 'redis')
-# -----------------------------------
-redis:
-  host: localhost
-  port: 6379
-  # username is only required when using ACLs
-  username:
-  password:
-  timeout: 2000
-  database: 0
-  maxTotal: 500
-   
\ No newline at end of file