diff --git a/.ci/ansible/Containerfile.j2 b/.ci/ansible/Containerfile.j2
index 0eb5d5ccb..c6c21fdb4 100644
--- a/.ci/ansible/Containerfile.j2
+++ b/.ci/ansible/Containerfile.j2
@@ -2,27 +2,21 @@ FROM {{ ci_base | default("ghcr.io/pulp/pulp-ci-centos:" + pulp_container_tag) }
 
 # Add source directories to container
 {% for item in plugins %}
-{% if item.source.startswith("./") or item.ci_requirements | default(false) %}
 ADD ./{{ item.name }} ./{{ item.name }}
-{% endif %}
 {% endfor %}
 
 # Install python packages
+# S3 botocore needs to be patched to handle responses from minio during 0-byte uploads
+# Hacking botocore (https://github.com/boto/botocore/pull/1990)
 
 RUN pip3 install
-{%- for item in plugins -%}
-{%- if item.name == "pulp-certguard" -%}
-{{ " " }}python-dateutil rhsm
-{%- endif -%}
-{{ " " }}{{ item.source }}
-{%- if item.name == "pulpcore" -%}
 {%- if s3_test | default(false) -%}
-[s3]
-{%- elif azure_test | default(false) -%}
-[azure]
-{%- elif gcp_test | default(false) -%}
-[google]
+{{ " " }}git+https://github.com/fabricio-aguiar/botocore.git@fix-100-continue
 {%- endif -%}
+{%- for item in plugins -%}
+{{ " " }}{{ item.source }}
+{%- if item.lowerbounds | default(false) -%}
+{{ " " }}-c ./{{ item.name }}/lowerbounds_constraints.txt
 {%- endif -%}
 {%- if item.ci_requirements | default(false) -%}
 {{ " " }}-r ./{{ item.name }}/ci_requirements.txt
diff --git a/.github/template_gitref b/.github/template_gitref
index ab3a1dea1..93f101901 100644
--- a/.github/template_gitref
+++ b/.github/template_gitref
@@ -1 +1 @@
-2021.08.26-292-gc6f5178
+2021.08.26-296-g466c79b
diff --git a/.github/workflows/scripts/before_install.sh b/.github/workflows/scripts/before_install.sh
index c1789d5b7..e2f8dfa94 100755
--- a/.github/workflows/scripts/before_install.sh
+++ b/.github/workflows/scripts/before_install.sh
@@ -66,8 +66,7 @@ then
 fi
 
 if [[ "$TEST" = "lowerbounds" ]]; then
-  python3 .ci/scripts/calc_deps_lowerbounds.py > lowerbounds_requirements.txt
-  mv lowerbounds_requirements.txt requirements.txt
+  python3 .ci/scripts/calc_deps_lowerbounds.py > lowerbounds_constraints.txt
 fi
 
 if [ -f $POST_BEFORE_INSTALL ]; then
diff --git a/.github/workflows/scripts/install.sh b/.github/workflows/scripts/install.sh
index 586a0dac8..59fa99f7e 100755
--- a/.github/workflows/scripts/install.sh
+++ b/.github/workflows/scripts/install.sh
@@ -35,6 +35,13 @@ then
 fi
 
 cd .ci/ansible/
+PLUGIN_SOURCE="${PLUGIN_NAME}"
+if [ "$TEST" = "s3" ]; then
+  PLUGIN_SOURCE="${PLUGIN_SOURCE} pulpcore[s3]"
+fi
+if [ "$TEST" = "azure" ]; then
+  PLUGIN_SOURCE="${PLUGIN_SOURCE} pulpcore[azure]"
+fi
 
 cat >> vars/main.yaml << VARSYAML
 image:
@@ -42,13 +49,18 @@ image:
   tag: "ci_build"
 plugins:
   - name: pulp_deb
-    source: "${PLUGIN_NAME}"
+    source: "${PLUGIN_SOURCE}"
 VARSYAML
 if [[ -f ../../ci_requirements.txt ]]; then
   cat >> vars/main.yaml << VARSYAML
     ci_requirements: true
 VARSYAML
 fi
+if [ "$TEST" = "lowerbounds" ]; then
+  cat >> vars/main.yaml << VARSYAML
+    lowerbounds: true
+VARSYAML
+fi
 
 cat >> vars/main.yaml << VARSYAML
 services:
diff --git a/docs/template_gitref b/docs/template_gitref
index ab3a1dea1..93f101901 100644
--- a/docs/template_gitref
+++ b/docs/template_gitref
@@ -1 +1 @@
-2021.08.26-292-gc6f5178
+2021.08.26-296-g466c79b