[nodejs] Add yarn

Author: SamuelHassine

Dockerfile_python

@@ -60,4 +60,5 @@ RUN set -ex \
     && apk add --no-cache curl \
     && curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py \
     && python3 get-pip.py \
+    && rm get-pip.py \
     && pip install cryptography --no-binary cryptography

Dockerfile_python_nodejs

@@ -60,7 +60,8 @@ RUN set -ex \
     && apk add --no-cache curl \
     && curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py \
     && python3 get-pip.py \
+    && rm get-pip.py \
     && pip install cryptography --no-binary cryptography
 
 RUN set -ex \
-    && apk add nodejs npm
+    && apk add nodejs npm yarn