Add build logs for hashing

Dockerfile

@@ -202,7 +202,10 @@ ${HOME}/scripts/build_info.py \
   --commit "${DOCKER_COMMIT}" \
   --version "${DOCKER_VERSION}" \
   --build "${DOCKER_BUILD}" \
-  --target "${DOCKER_TARGET}"
+  --target "${DOCKER_TARGET}" \
+  --verbose
+  # Add verbose logging so we can debug invalid hashes
+  # from the build logs
 EOF
 
 FROM base AS production

scripts/build_info.py

@@ -32,14 +32,20 @@ def hash_directory(
             hasher.update(f.name.encode())
             if f.is_file():
                 hasher.update(f.read_bytes())
+                if verbose:
+                    print(f'{f.name.encode()}: {hasher.hexdigest()}')
         elif verbose:
             print(f'Skipping {f}')
 
     return hasher.hexdigest()
 
 
 def build_info(
-    commit: str = None, version: str = None, build: str = None, target: str = None
+    commit: str = None,
+    version: str = None,
+    build: str = None,
+    target: str = None,
+    verbose: bool = False,
 ):
     """
     Create a build info file with the current build information from the environment.
@@ -52,9 +58,14 @@ def build_info(
         'source': 'https://github.com/mozilla/addons-server',
         'content_hash': {
             'site_static_hash': hash_directory(
-                (root / 'site-static'), exclude_patterns=['staticfiles.json']
+                (root / 'site-static'),
+                exclude_patterns=['staticfiles.json'],
+                verbose=verbose,
+            ),
+            'locale_hash': hash_directory(
+                (root / 'locale'),
+                verbose=verbose,
             ),
-            'locale_hash': hash_directory((root / 'locale')),
         },
     }
 
@@ -68,10 +79,13 @@ def build_info(
     parser.add_argument('--build', type=str, required=False)
     # Docker target is used to determine build time and runtime behavior
     parser.add_argument('--target', type=str, required=True)
+    parser.add_argument('--verbose', action='store_true')
 
     args = parser.parse_args()
 
-    version = build_info(args.commit, args.version, args.build, args.target)
+    version = build_info(
+        args.commit, args.version, args.build, args.target, args.verbose
+    )
 
     if args.output:
         with open(args.output, 'w') as f: