Update Docker APT references
Update Docker APT references

Docker repository address is changing in the end of March 2020. Also added current public key.

Signed-off-by: adamczi <8348b3f260ec09a1470f3301d1f72d78e6a1baed@users.noreply.github.com>

bkimminich/juice-shop,bkimminich/juice-shop,bkimminich/juice-shop,bkimminich/juice-shop,bkimminich/juice-shop,bkimminich/juice-shop