fixing environment variable example

Author: vsoch

pages/docs/user-docs/docs-docker.md

@@ -98,7 +98,7 @@ sudo singularity bootstrap tensorflow.img Singularity
 ```
 
 but just those two lines and doing bootstrap is silly, because we would achieve the same thing by doing:
-
+environment
 ```bash
 singularity create --size 4000 tensorflow.img
 singularity import tensorflow.img docker://tensorflow/tensorflow:latest
@@ -125,9 +125,9 @@ From: tensorflow/tensorflow:latest
 relative_path.py /tmp/analysis2.py
 
 %environment
-
-TOPSECRET pancakes
-HELLO WORLD
+TOPSECRET=pancakes
+HELLO=WORLD
+export HELLO TOPSECRET
 
 %labels
 

pages/docs/user-docs/docs-environment-metadata.md

@@ -19,6 +19,7 @@ From: ubuntu:latest
 
 %environment
 VARIABLE_NAME=VARIABLE_VALUE
+export VARIABLE_NAME
 ```
 
 Forget something, or need a variable defined at runtime? You can set any variable you want inside the container by prefixing it with "SINGULARITYENV_". It will be transposed automatically and the prefix will be stripped. For example, let's say we want to set the variable `HELLO` to have value `WORLD`. We can do that as follows: