diff --git a/README.md b/README.md
index 324ed05..0a56802 100644
--- a/README.md
+++ b/README.md
@@ -65,3 +65,14 @@ an Openshift Origin cluster.
    GALLERY_S3_BUCKET_ID = $s3BucketID
    GALLERY_S3_SECRET_KEY = $s3SecretKey
    ```
+
+## Local Development
+Below are instructions for running gallery locally. It assumes that you have already forked and cloned this repository onto your local machine.
+
+1. Change the line in `__init__.py` that sets the config file from `config.env.py` to `localconfig.env.py`.
+
+2. Get gallery dev secrets from an RTP and fill in `localconfig.env.py`. *DO NOT COMMIT THESE TO GIT*
+
+3. Run `pip install -r requirements.txt`
+
+4. Run `python3 wsgi.py`
\ No newline at end of file
diff --git a/gallery/__init__.py b/gallery/__init__.py
index 8ea5fcc..18b737a 100644
--- a/gallery/__init__.py
+++ b/gallery/__init__.py
@@ -25,6 +25,7 @@
 from flask import send_from_directory
 from flask import abort
 from flask_sqlalchemy import SQLAlchemy
+from sqlalchemy import or_
 from sqlalchemy.sql import func as sql_func
 from sqlalchemy.orm import load_only
 from flask_pyoidc.flask_pyoidc import OIDCAuthentication
@@ -213,7 +214,7 @@ def upload_file(auth_dict: Optional[Dict[str, Any]] = None):
     upload_status['error'] = errors
     upload_status['success'] = success
 
-    refresh_thumbnail()
+    refresh_default_thumbnails()
     # actually redirect to URL
     # change from FORM post to AJAX maybe?
     return jsonify(upload_status)
@@ -311,7 +312,7 @@ def api_mkdir(
 @app.cli.command()
 def refresh_thumbnails():
     click.echo("Refreshing thumbnails")
-    refresh_thumbnail()
+    refresh_default_thumbnails()
 
 
 @app.cli.command()
@@ -386,24 +387,25 @@ def add_file(file_name: str, path: str, dir_id: str, description: str, owner: st
     return file_model
 
 
-def refresh_thumbnail():
-    def refresh_thumbnail_helper(dir_model: Directory) -> str:
-        dir_children = [d for d in Directory.query.filter(Directory.parent == dir_model.id).all()]
-        file_children = [f for f in File.query.filter(File.parent == dir_model.id).all()]
-        for file in file_children:
-            if file.thumbnail_uuid != DEFAULT_THUMBNAIL_NAME:
-                return file.thumbnail_uuid
-        for d in dir_children:
-            if d.thumbnail_uuid != DEFAULT_THUMBNAIL_NAME:
-                return d.thumbnail_uuid
-        # WE HAVE TO GO DEEPER (inception noise)
-        for d in dir_children:
-            # TODO: Switch to iterative tree walk using a queue to avoid
-            # recursion issues with super large directory structures
-            return refresh_thumbnail_helper(d)
-        # No thumbnail found
-        return DEFAULT_THUMBNAIL_NAME
-
+def refresh_directory_thumbnail(dir_model: Directory) -> str:
+    dir_children = [d for d in Directory.query.filter(Directory.parent == dir_model.id).all()]
+    file_children = [f for f in File.query.filter(File.parent == dir_model.id).all()]
+    for file in file_children:
+        if file.thumbnail_uuid != DEFAULT_THUMBNAIL_NAME and not file.hidden:
+            return file.thumbnail_uuid
+    for d in dir_children:
+        if d.thumbnail_uuid != DEFAULT_THUMBNAIL_NAME:
+            return d.thumbnail_uuid
+    # WE HAVE TO GO DEEPER (inception noise)
+    for d in dir_children:
+        # TODO: Switch to iterative tree walk using a queue to avoid
+        # recursion issues with super large directory structures
+        return refresh_directory_thumbnail(d)
+    # No thumbnail found
+    return DEFAULT_THUMBNAIL_NAME
+
+
+def refresh_default_thumbnails():
     missing_thumbnails = File.query.filter(File.thumbnail_uuid == DEFAULT_THUMBNAIL_NAME).all()
     for file_model in missing_thumbnails:
         dir_path = get_full_dir_path(file_model.parent)
@@ -416,7 +418,7 @@ def refresh_thumbnail_helper(dir_model: Directory) -> str:
 
     missing_thumbnails = Directory.query.filter(Directory.thumbnail_uuid == DEFAULT_THUMBNAIL_NAME).all()
     for dir_model in missing_thumbnails:
-        dir_model.thumbnail_uuid = refresh_thumbnail_helper(dir_model)
+        dir_model.thumbnail_uuid = refresh_directory_thumbnail(dir_model)
         db.session.flush()
         db.session.commit()
         db.session.refresh(dir_model)
@@ -476,6 +478,13 @@ def hide_file(file_id: int, auth_dict: Optional[Dict[str, Any]] = None):
         return "Permission denied", 403
 
     file_model.hidden = True
+
+    # Remove image from thumbnails
+    dirs = Directory.query.filter(or_(Directory.thumbnail_uuid == file_model.thumbnail_uuid, \
+        Directory.thumbnail_uuid == file_model.thumbnail_uuid[:-4]))
+    for d in dirs:
+        d.thumbnail_uuid = refresh_directory_thumbnail(d)
+
     db.session.flush()
     db.session.commit()
 
@@ -497,6 +506,12 @@ def show_file(file_id: int, auth_dict: Optional[Dict[str, Any]] = None):
         return "Permission denied", 403
 
     file_model.hidden = False
+
+    # Add image as directory thumbnail
+    parent_model = Directory.query.filter(Directory.id == file_model.parent).first()
+    if parent_model.thumbnail_uuid == DEFAULT_THUMBNAIL_NAME:
+        parent_model.thumbnail_uuid = refresh_directory_thumbnail(parent_model)
+
     db.session.flush()
     db.session.commit()
 
diff --git a/gallery/static/js/gallery.js b/gallery/static/js/gallery.js
index b4b44a4..9bcbb79 100644
--- a/gallery/static/js/gallery.js
+++ b/gallery/static/js/gallery.js
@@ -252,7 +252,7 @@ function hideFile() {
 
 function showFile() {
     $('#show').modal('show');
-    $('#show button[id^="hide"]').click(function(e) {
+    $('#show button[id^="show"]').click(function(e) {
         e.preventDefault();
         var this_id = $('#show button[id^="show"]').attr('id').substr($('#show button[id^="show"]').attr('id').indexOf("-") + 1);
         $.ajax({
diff --git a/localconfig.env.py b/localconfig.env.py
new file mode 100644
index 0000000..8cf7bfc
--- /dev/null
+++ b/localconfig.env.py
@@ -0,0 +1,29 @@
+import os
+
+# Flask config
+DEBUG=False
+IP=os.environ.get('GALLERY_IP', 'localhost')
+PORT=os.environ.get('GALLERY_PORT', '6969')
+SERVER_NAME = os.environ.get('GALLERY_SERVER_NAME', 'localhost:6969')
+SECRET_KEY = os.environ.get('GALLERY_SECRET_KEY', '')
+
+# LDAP config
+LDAP_URL=os.environ.get('GALLERY_LDAP_URL', 'ldaps://ldap.csh.rit.edu:636')
+LDAP_BIND_DN=os.environ.get('GALLERY_LDAP_BIND_DN', '')
+LDAP_BIND_PW=os.environ.get('GALLERY_LDAP_BIND_PW', '')
+LDAP_USER_OU=os.environ.get('GALLERY_LDAP_USER_OU', 'ou=Users,dc=csh,dc=rit,dc=edu')
+
+# OpenID Connect SSO config
+OIDC_ISSUER = os.environ.get('GALLERY_OIDC_ISSUER', 'https://sso.csh.rit.edu/auth/realms/csh')
+OIDC_CLIENT_ID = os.environ.get('GALLERY_OIDC_CLIENT_ID', 'gallery-dev')
+OIDC_CLIENT_SECRET = os.environ.get('GALLERY_OIDC_CLIENT_SECRET', '')
+
+SQLALCHEMY_DATABASE_URI = os.environ.get(
+    'GALLERY_DATABASE_URI',
+    'postgresql://gallery:undergrowth7803824=exhibitionist@postgres.csh.rit.edu/gallery-dev')
+SQLALCHEMY_TRACK_MODIFICATIONS = False
+
+S3_URI = os.environ.get('GALLERY_S3_URI', 'https://s3.csh.rit.edu')
+S3_ACCESS_ID = os.environ.get('GALLERY_S3_ACCESS_ID','')
+S3_SECRET_KEY = os.environ.get('GALLERY_S3_SECRET_KEY','')
+S3_BUCKET_ID = os.environ.get('GALLERY_S3_BUCKET_ID','gallery-dev')
diff --git a/requirements.txt b/requirements.txt
index de06ac5..aae44a7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
 Flask==1.0.2
 Flask-pyoidc==2.0.0
-csh_ldap==2.1.1
+csh_ldap~=2.2.0
 addict==2.2.0
 flask_sqlalchemy==2.3.2
 flask_migrate==2.3.1