Use --no-cache for Alpine to minimize footprint

Using `apk add --no-cache tini` instead of `apk add --update tini` avoids caching and reduces the size of the resulting container. See here: https://github.com/gliderlabs/docker-alpine/blob/master/docs/usage.md#disabling-cache
8 years ago · 21c118c0e9
parent e96fb184ea
commit 21c118c0e9
2 changed files with 2 additions and 2 deletions
--- a/README.md
+++ b/README.md
@ -96,7 +96,7 @@ your package manager):
 On Alpine Linux, you can use the following command to install Tini:
-    RUN apk add --update tini
+    RUN apk add --no-cache tini
    # Tini is now available at /sbin/tini
    ENTRYPOINT ["/sbin/tini", "--"]
--- a/tpl/README.md.in
+++ b/tpl/README.md.in
@ -96,7 +96,7 @@ your package manager):
 On Alpine Linux, you can use the following command to install Tini:
-    RUN apk add --update tini
+    RUN apk add --no-cache tini
    # Tini is now available at /sbin/tini
    ENTRYPOINT ["/sbin/tini", "--"]