diff --git a/tools.dockerfile b/tools.dockerfile
index 9d1462a9..873f62e7 100644
--- a/tools.dockerfile
+++ b/tools.dockerfile
@@ -1,40 +1,44 @@
 # FROM mhart/alpine-node:8
 # FROM alpine:3.6
+# ENV NPM_VERSION=6.14.8 YARN_VERSION=v1.22.10
 
 # FROM mhart/alpine-node:10
 # FROM alpine:3.7
+# ENV NPM_VERSION=6.14.8 YARN_VERSION=v1.22.10
 
 # FROM mhart/alpine-node:12
 # FROM alpine:3.9
+# ENV NPM_VERSION=6.14.8 YARN_VERSION=v1.22.10
 
 # FROM mhart/alpine-node:14
 # FROM alpine:3.11
+# ENV NPM_VERSION=6.14.8 YARN_VERSION=v1.22.10
 
 FROM mhart/alpine-node:15
 FROM alpine:3.12
+ENV NPM_VERSION=7.0.3 YARN_VERSION=v1.22.10
 
 COPY --from=0 /usr/bin/node /usr/bin/
-COPY --from=0 /usr/lib/node_modules /usr/lib/node_modules
 COPY --from=0 /usr/include/node /usr/include/node
 COPY --from=0 /usr/share/systemtap/tapset/node.stp /usr/share/systemtap/tapset/
 
 RUN apk upgrade --no-cache -U && \
-  apk add --no-cache curl gnupg libstdc++
-RUN /usr/lib/node_modules/npm/bin/npm-cli.js install -g npm@latest && \
+  apk add --no-cache curl gnupg make bash libstdc++
+RUN curl -L https://www.npmjs.com/install.sh | npm_install=${NPM_VERSION} sh && \
   find /usr/lib/node_modules/npm -type d \( -name test -o -name .bin \) | xargs rm -rf
 RUN for server in ipv4.pool.sks-keyservers.net keyserver.pgp.com ha.pool.sks-keyservers.net; do \
     gpg --keyserver $server --recv-keys \
       6A010C5166006599AA17F08146C2130DFD2497F5 && break; \
   done
-RUN curl -sfSL -O https://yarnpkg.com/latest.tar.gz -O https://yarnpkg.com/latest.tar.gz.asc && \
-  gpg --batch --verify latest.tar.gz.asc latest.tar.gz && \
+RUN curl -sfSL -O https://github.com/yarnpkg/yarn/releases/download/${YARN_VERSION}/yarn-${YARN_VERSION}.tar.gz -O https://github.com/yarnpkg/yarn/releases/download/${YARN_VERSION}/yarn-${YARN_VERSION}.tar.gz.asc && \
+  gpg --batch --verify yarn-${YARN_VERSION}.tar.gz.asc yarn-${YARN_VERSION}.tar.gz && \
   rm -rf /usr/local/share/yarn && \
   mkdir /usr/local/share/yarn && \
-  tar -xf latest.tar.gz -C /usr/local/share/yarn --strip 1 && \
+  tar -xf yarn-${YARN_VERSION}.tar.gz -C /usr/local/share/yarn --strip 1 && \
   ln -sf /usr/local/share/yarn/bin/yarn /usr/local/bin/ && \
   ln -sf /usr/local/share/yarn/bin/yarnpkg /usr/local/bin/
-RUN apk del curl gnupg
-RUN rm -rf latest.tar.gz* /tmp/* \
+RUN apk del curl gnupg make bash
+RUN rm -rf *.tar.gz* /tmp/* \
     /usr/share/man/* /usr/share/doc /root/.npm /root/.node-gyp /root/.config \
     /usr/lib/node_modules/npm/man /usr/lib/node_modules/npm/doc /usr/lib/node_modules/npm/docs \
     /usr/lib/node_modules/npm/html /usr/lib/node_modules/npm/scripts && \