chore(deps): update alpine docker tag to v3.24

Dockerfile

@@ -5,17 +5,23 @@ COPY entrypoint.sh /entrypoint.sh
 COPY patch.py /tmp/patch.py
 
 # hadolint ignore=DL3018
-RUN apk add --no-cache offlineimap openssl tini && \
+RUN apk add --no-cache offlineimap openssl && \
     adduser -D offlineimap && \
-    # Apply post-install patches:
+    # Force SECLEVEL=1 in imaplib2 to allow connecting to servers with weak DH keys (DH_KEY_TOO_SMALL)
-    #   - UnicodeEncodeError fallback for defective messages (Maildir + IMAP)
+    # This is required because OpenSSL 3.x in Alpine 3.23 defaults to SECLEVEL=2
-    #   - SSL SECLEVEL=1 in imaplib2 to allow connecting to servers with weak DH keys
+    sed -i 's/ctx = ssl.SSLContext(ssl_version)/ctx = ssl.SSLContext(ssl_version)\n                ctx.set_ciphers("DEFAULT:@SECLEVEL=1")/' /usr/lib/python3.*/site-packages/imaplib2/imaplib2.py && \
-    #     (OpenSSL 3.x defaults to SECLEVEL=2)
+    # Patch offlineimap email generator bug for defective messages
     python3 /tmp/patch.py && rm /tmp/patch.py
 
 COPY --chown=offlineimap offlineimaprc.*.tmpl /home/offlineimap/
 
+# Add Tini
+ENV "TINI_VERSION" "v0.16.1"
+#ADD "https://github.com/krallin/tini/releases/download/${TINI_VERSION}/tini" "/tini"
+#RUN chmod +x "/tini"
+#ENTRYPOINT ["/tini", "--"]
+
 USER "offlineimap"
 
-ENTRYPOINT ["/sbin/tini", "--"]
+#ENTRYPOINT [ "/entrypoint.sh" ]
 CMD [ "/entrypoint.sh" ]

patch.py

@@ -1,52 +1,16 @@
-#!/usr/bin/env python3
+import sys, os
-"""Post-install patches for offlineimap on Alpine.
-
-Run as root in the Docker build (RUN python3 /tmp/patch.py).
-Fixes two upstream issues that persist in offlineimap 8.0.0:
-
-1. UnicodeEncodeError when writing messages with non-ASCII bytes
-   (Maildir.save thread + IMAP header generation).
-2. SSL SECLEVEL=2 in OpenSSL 3.x prevents connecting to servers with
-   weak DH keys (DH_KEY_TOO_SMALL). Force SECLEVEL=1 in imaplib2.
-
-Paths are resolved dynamically so the patch survives Python version
-bumps across Alpine releases (was hardcoded to python3.12).
-"""
-
-import glob
-import sys
-
-# ---------------------------------------------------------------
-# 1. Maildir.py — wrap fd.write(msg.as_bytes(...)) in a try/except
-#    that falls back to UTF-8 encoded as_string on UnicodeEncodeError
-# ---------------------------------------------------------------
-
-maildir_path = glob.glob(
-    "/usr/lib/python%d.%d/site-packages/offlineimap/folder/Maildir.py"
-    % (sys.version_info.major, sys.version_info.minor)
-)[0]
 
+maildir_path = "/usr/lib/python3.12/site-packages/offlineimap/folder/Maildir.py"
 with open(maildir_path, "r") as f:
     maildir = f.read()
-
 maildir = maildir.replace(
     "fd.write(msg.as_bytes(policy=output_policy))",
-    "try:\n            fd.write(msg.as_bytes(policy=output_policy))\n        except UnicodeEncodeError:\n            fd.write(msg.as_string(policy=output_policy).encode('utf-8'))",
+    "try:\n            fd.write(msg.as_bytes(policy=output_policy))\n        except UnicodeEncodeError:\n            fd.write(msg.as_string(policy=output_policy).encode('utf-8'))"
 )
-
 with open(maildir_path, "w") as f:
     f.write(maildir)
 
-# ---------------------------------------------------------------
+imap_path = "/usr/lib/python3.12/site-packages/offlineimap/folder/IMAP.py"
-# 2. IMAP.py — add a helper and replace msg.as_bytes(policy=...) calls
-#    with the helper that falls back on UnicodeEncodeError
-# ---------------------------------------------------------------
-
-imap_path = glob.glob(
-    "/usr/lib/python%d.%d/site-packages/offlineimap/folder/IMAP.py"
-    % (sys.version_info.major, sys.version_info.minor)
-)[0]
-
 with open(imap_path, "r") as f:
     imap_py = f.read()
 
@@ -57,40 +21,6 @@ def get_msg_bytes(msg, policy):
     except UnicodeEncodeError:
         return msg.as_string(policy=policy).encode('utf-8')
 """
-imap_py = imap_patch + imap_py.replace(
+imap_py = imap_patch + imap_py.replace("msg.as_bytes(policy=output_policy)", "get_msg_bytes(msg, output_policy)")
-    "msg.as_bytes(policy=output_policy)", "get_msg_bytes(msg, output_policy)"
-)
-
 with open(imap_path, "w") as f:
     f.write(imap_py)
-
-# ---------------------------------------------------------------
-# 3. imaplib2.py — force SECLEVEL=1 to allow weak DH keys
-#    (moved here from a sed one-liner in the Dockerfile)
-# ---------------------------------------------------------------
-
-imaplib2_paths = glob.glob(
-    "/usr/lib/python%d.%d/site-packages/imaplib2/imaplib2.py"
-    % (sys.version_info.major, sys.version_info.minor)
-)
-
-if imaplib2_paths:
-    imaplib2_path = imaplib2_paths[0]
-    with open(imaplib2_path, "r") as f:
-        imaplib2_py = f.read()
-
-    old = "ctx = ssl.SSLContext(ssl_version)"
-    new = (
-        'ctx = ssl.SSLContext(ssl_version)\n'
-        '                ctx.set_ciphers("DEFAULT:@SECLEVEL=1")'
-    )
-
-    if old in imaplib2_py:
-        imaplib2_py = imaplib2_py.replace(old, new)
-        with open(imaplib2_path, "w") as f:
-            f.write(imaplib2_py)
-        print("Patched imaplib2 SECLEVEL=1")
-    else:
-        print("imaplib2 already patched or pattern not found — skipping")
-else:
-    print("imaplib2 not found — skipping SECLEVEL patch")