diff --git a/.forgejo/workflows/build-push-jre-alpine.yml b/.forgejo/workflows/build-push-jre-alpine.yml
index 87306e2..d3822cc 100644
--- a/.forgejo/workflows/build-push-jre-alpine.yml
+++ b/.forgejo/workflows/build-push-jre-alpine.yml
@@ -4,7 +4,7 @@ on:
     tags:
       - 'jre-alpine*.**.*/v**'
   schedule:
-    - cron: '0 0 * * 1'
+    - cron: '0 0 1-31 1-12 1'
 
 jobs:
   build_push:
diff --git a/server/buildenv-jre-alpine/Containerfile b/server/buildenv-jre-alpine/Containerfile
index d41005f..26fcaa3 100644
--- a/server/buildenv-jre-alpine/Containerfile
+++ b/server/buildenv-jre-alpine/Containerfile
@@ -1,3 +1,3 @@
 FROM alpine:3.22
 
-RUN apk add --no-cache openjdk21-jre rcon bash
+RUN apk add --no-cache openjdk21-jre-headless rcon
diff --git a/server/buildenv-jre-alpine/Containerfile_minimal b/server/buildenv-jre-alpine/Containerfile_minimal
deleted file mode 100644
index 26fcaa3..0000000
--- a/server/buildenv-jre-alpine/Containerfile_minimal
+++ /dev/null
@@ -1,3 +0,0 @@
-FROM alpine:3.22
-
-RUN apk add --no-cache openjdk21-jre-headless rcon