Docs: add hint to README to fix an error with building a Docker image (…

…#2833) Co-authored-by: Jan Eißler <jan.eissler@voltfang.de>
OpenEMS · Oct 13, 2024 · 1b18fa0 · 1b18fa0
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diff --git a/tools/docker/backend/README.md b/tools/docker/backend/README.md
@@ -78,3 +78,9 @@
     ```
 
     *for UI Image see [ui/README.md](../ui/README.md)*
+
+# Common Problems and Solutions
+```
+ERROR: failed to solve: error from sender: context canceled
+```
+When building the Docker image this error may occur because another program is accessing the project files. Try closing these programs (e.g. Eclipse IDE) and run the build command again.
diff --git a/tools/docker/edge/README.md b/tools/docker/edge/README.md
@@ -35,4 +35,11 @@
     docker build . -t openems_edge -f tools/docker/edge/Dockerfile
     ```
 
-    *for UI Image see [ui/README.md](../ui/README.md)*
+    *for UI Image see [ui/README.md](../ui/README.md)*
+
+# Common Problems and Solutions
+```
+ERROR: failed to solve: error from sender: context canceled
+```
+When building the Docker image this error may occur because another program is accessing the project files. Try closing these programs (e.g. Eclipse IDE) and run the build command again.
+