diff --git a/.gitignore b/.gitignore
index 15cc71efb2d..ae35d3ba241 100644
--- a/.gitignore
+++ b/.gitignore
@@ -35,3 +35,4 @@ build/local-config.mk
 .*.swp
 
 .idea
+.ccache
diff --git a/ide/docker/Dockerfile b/ide/docker/Dockerfile
index 8027d71e331..5f70ccc1a5a 100644
--- a/ide/docker/Dockerfile
+++ b/ide/docker/Dockerfile
@@ -15,3 +15,4 @@ WORKDIR /usr/local/bin
 RUN chmod 755 ./*
 
 WORKDIR /opt/xcsoar
+ENV CCACHE_DIR /opt/xcsoar/.ccache