fix(ci): use direct download for IBM iAccess ODBC driver

The IBM apt repository method was causing CI build failures with "Unable to locate package ibm-iaccess" despite apt update succeeding. The original approach had multiple issues: missing -y flag for non-interactive mode, using apt instead of apt-get in scripts, and unreliable repository package resolution.

Switch to downloading the .deb package directly from IBM's server and use dpkg --force-depends to bypass dependency name mismatches. The package declares old Debian package names (libodbc1, odbcinst1debian2) that don't exist in Debian 12, but the actual dependencies (unixodbc, odbcinst) are already installed earlier in the Dockerfile.

This is more reliable because:
- Eliminates repository caching and resolution issues
- Provides predictable versioning (1.1.0.13)
- Reduces build steps and potential failure points
- Uses dpkg --force-depends safely since the actual libraries are present under different package names
- apt-get install -f ensures any actual missing dependencies are resolved

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: edg956

ingestion/operators/docker/Dockerfile

@@ -63,12 +63,16 @@ RUN if [ $(uname -m) = "arm64" || $(uname -m) = "aarch64" ]; \
 ENV LD_LIBRARY_PATH=/instantclient
 
 # Install DB2 iAccess driver
-RUN if [ $(uname -m) = "x86_64" ]; \
-  then \
-  curl https://public.dhe.ibm.com/software/ibmi/products/odbc/debs/dists/1.1.0/ibmi-acs-1.1.0.list | tee /etc/apt/sources.list.d/ibmi-acs-1.1.0.list \
-  && apt update \
-  && apt install ibm-iaccess; \
-  fi
+# The IBM repository approach is unreliable in CI environments, so we download the package directly
+# Use dpkg --force-depends because the package declares old Debian package names (libodbc1, odbcinst1debian2)
+# that don't exist in Debian 12, but the actual dependencies (unixodbc, odbcinst) are already installed
+RUN if [ $(uname -m) = "x86_64" ]; then \
+  wget -q https://public.dhe.ibm.com/software/ibmi/products/odbc/debs/dists/1.1.0/main/binary-amd64/ibm-iaccess-1.1.0.13-1.0.amd64.deb \
+    -O /tmp/ibm-iaccess.deb && \
+  dpkg -i --force-depends /tmp/ibm-iaccess.deb && \
+  apt-get install -f -y --no-install-recommends && \
+  rm -f /tmp/ibm-iaccess.deb; \
+fi
 
 WORKDIR ingestion/
 

ingestion/operators/docker/Dockerfile.ci

@@ -63,12 +63,16 @@ RUN if [ $(uname -m) = "arm64" ] | [ $(uname -m) = "aarch64" ]; \
 ENV LD_LIBRARY_PATH=/instantclient
 
 # Install DB2 iAccess Driver
-RUN if [ $(uname -m) = "x86_64" ]; \
-  then \
-  curl https://public.dhe.ibm.com/software/ibmi/products/odbc/debs/dists/1.1.0/ibmi-acs-1.1.0.list | tee /etc/apt/sources.list.d/ibmi-acs-1.1.0.list \
-  && apt update \
-  && apt install ibm-iaccess; \
-  fi
+# The IBM repository approach is unreliable in CI environments, so we download the package directly
+# Use dpkg --force-depends because the package declares old Debian package names (libodbc1, odbcinst1debian2)
+# that don't exist in Debian 12, but the actual dependencies (unixodbc, odbcinst) are already installed
+RUN if [ $(uname -m) = "x86_64" ]; then \
+  wget -q https://public.dhe.ibm.com/software/ibmi/products/odbc/debs/dists/1.1.0/main/binary-amd64/ibm-iaccess-1.1.0.13-1.0.amd64.deb \
+    -O /tmp/ibm-iaccess.deb && \
+  dpkg -i --force-depends /tmp/ibm-iaccess.deb && \
+  apt-get install -f -y --no-install-recommends && \
+  rm -f /tmp/ibm-iaccess.deb; \
+fi
 
 WORKDIR /ingestion