From 0a4b2f19e375a3f2306ccdffd03b31bb402a458d Mon Sep 17 00:00:00 2001
From: gaojin <igaojin@qq.com>
Date: Mon, 17 Sep 2018 10:37:25 +0800
Subject: [PATCH] use --no-cache-dir for docker build
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use --no-cache can save about 90M
```
➜  freqtrade git:(develop) ✗ docker images freq
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
freq                latest              b15db8341067        7 minutes ago       800MB
➜  freqtrade git:(develop) ✗ docker images freq_nocache
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
freq_nocache        latest              e5731f28ac54        20 seconds ago      709MB
```
---
 Dockerfile | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/Dockerfile b/Dockerfile
index 5d1b44f8c..aa9071024 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -15,11 +15,11 @@ RUN mkdir /freqtrade
 WORKDIR /freqtrade
 
 # Install dependencies
-COPY requirements.txt /freqtrade/
-RUN pip install numpy \
-  && pip install -r requirements.txt
+COPY requirements.txt /freqtrade/ 
+RUN pip install numpy --no-cache-dir \
+  && pip install -r requirements.txt --no-cache-dir
 
 # Install and execute
 COPY . /freqtrade/
-RUN pip install -e .
+RUN pip install -e . --no-cache-dir
 ENTRYPOINT ["freqtrade"]