docker: fix build on arm64 architecture

Closes reanahub/reana#753.

CHANGES.rst

@@ -1,6 +1,11 @@
 Changes
 =======
 
+Version 0.9.2 (UNRELEASED)
+--------------------------
+
+- Fixes container image building on the arm64 architecture.
+
 Version 0.9.1 (2023-09-27)
 --------------------------
 

Dockerfile

@@ -7,6 +7,9 @@
 # Use Ubuntu LTS base image
 FROM docker.io/library/ubuntu:20.04
 
+# Recognise target architecture
+ARG TARGETARCH
+
 # Use default answers in installation commands
 ENV DEBIAN_FRONTEND=noninteractive
 
@@ -82,7 +85,19 @@ COPY . /code
 
 # Are we debugging?
 ARG DEBUG=0
-RUN if [ "${DEBUG}" -gt 0 ]; then pip install -e ".[debug]"; else pip install .; fi;
+RUN if [ "${DEBUG}" -gt 0 ]; then \
+      if echo "$COMPUTE_BACKENDS" | grep -q "htcondorcern"; then \
+        pip install -e ".[debug,htcondor]"; \
+      else \
+        pip install -e ".[debug]"; \
+      fi \
+    else \
+      if echo "$COMPUTE_BACKENDS" | grep -q "htcondorcern"; then \
+        pip install ".[htcondor]"; \
+      else \
+        pip install .; \
+      fi \
+    fi
 
 # Are we building with locally-checked-out shared modules?
 # hadolint ignore=SC2102

requirements.txt

@@ -27,7 +27,6 @@ flask==2.1.3              # via reana-job-controller (setup.py)
 fs==2.4.16                # via reana-commons, reana-job-controller (setup.py)
 google-auth==2.23.0       # via kubernetes
 gssapi==1.8.3             # via paramiko
-htcondor==9.0.17          # via reana-job-controller (setup.py)
 idna==3.4                 # via jsonschema, requests
 importlib-metadata==6.8.0  # via alembic, flask
 importlib-resources==6.1.0  # via alembic

setup.py

@@ -35,6 +35,9 @@
         "sphinxcontrib-openapi>=0.8.0",
         "sphinxcontrib-redoc>=1.5.1",
     ],
+    "htcondor": [
+        "htcondor==9.0.17",
+    ],
     "tests": tests_require,
     "ssh": ["paramiko[gssapi]>=3.0.0"],
 }
@@ -63,7 +66,6 @@
     "marshmallow>2.13.0,<=2.20.1",
     "reana-commons[kubernetes]>=0.9.3,<0.10.0",
     "reana-db>=0.9.2,<0.10.0",
-    "htcondor==9.0.17",
     "retrying>=1.3.3",
 ]