Fix bug in webapp Dockerfile
Fix bug in webapp Dockerfile

joshblum/eeg-toolkit,joshblum/eeg-spectrogram,joshblum/eeg-spectrogram,joshblum/eeg-toolkit,joshblum/eeg-spectrogram,joshblum/eeg-toolkit,joshblum/eeg-toolkit,joshblum/eeg-spectrogram,joshblum/eeg-toolkit,joshblum/eeg-spectrogram