From 6b3376ca129a0d0d0a2d96ad7f56b2f5b0cbf83d Mon Sep 17 00:00:00 2001
From: Jorge Henrique <jhrocha.sousa@gmail.com>
Date: Sat, 17 Feb 2018 00:10:39 -0300
Subject: [PATCH] Added bests pratices and util cmds for dockerfile

---
 dockerfile.md | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)

diff --git a/dockerfile.md b/dockerfile.md
index 6c58b9494..8a2a8b57d 100644
--- a/dockerfile.md
+++ b/dockerfile.md
@@ -30,6 +30,16 @@ RUN bundle install
 WORKDIR /myapp
 ```
 
+```
+VOLUME ["/data"]
+# Specification for mount point
+```
+
+```docker
+ADD file.xyz /file.xyz
+COPY --chown=user:group host_file.xyz /path/container_file.xyz
+```
+
 ### Onbuild
 
 ```bash
@@ -44,6 +54,30 @@ EXPOSE 5900
 CMD    ["bundle", "exec", "rails", "server"]
 ```
 
+### Entrypoint
+
+```docker
+ENTRYPOINT ["executable", "param1", "param2"]
+ENTRYPOINT command param1 param2
+# an ENTRYPOINT allows you to configure a container that will run as an executable.
+```
+
+```docker
+ENTRYPOINT exec top -b
+# this form will use shell processing to substitute shell environment variables, and will ignore any CMD or docker run command line arguments
+```
+
+### Metadata
+
+```docker
+LABEL "com.example.vendor"="ACME Incorporated"
+LABEL com.example.label-with-value="foo"
+LABEL version="1.0"
+LABEL description="This text illustrates \
+that label-values can span multiple lines."
+# add a metada
+```
+
 ## See also
 {: .-one-column}