remove npm build from docker entrypoint script (#1157) (#1159)

## High Level Overview of Change

Moving npm build into docker build

### Context of Change

Moving npm build into docker build to make sure complied javascript on
each pod has the same version hash.

### Type of Change

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- [ ] New feature (non-breaking change which adds functionality)
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- [ ] Documentation Updates
- [ ] Translation Updates
- [ ] Release

### TypeScript/Hooks Update

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- [ ] Updated files to React Hooks
- [ ] Updated files to TypeScript

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- [ ] Release

### TypeScript/Hooks Update

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- [ ] Updated files to React Hooks
- [ ] Updated files to TypeScript

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Co-authored-by: pdp2121 <71317875+pdp2121@users.noreply.github.com>

Author: shichengripple001

entrypoint.sh

@@ -4,5 +4,4 @@ set -e
 cd /explorer
 
 # we build on container startup because react needs the env variables present
-/usr/local/bin/npm run build
 /usr/local/bin/node server