diff --git a/Dockerfile b/Dockerfile
index a92391e36..1ab42f700 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -2,7 +2,7 @@ FROM fedora:latest
 RUN dnf -y install python3-setuptools flatpak python3-pip git \
     gcc krb5-devel python3-devel popt-devel && dnf clean all
 RUN mkdir /tmp/atomic-reactor
-ADD . /tmp/atomic-reactor
+COPY . /tmp/atomic-reactor
 RUN pip3 install git+https://github.com/containerbuildsystem/osbs-client
 RUN cd /tmp/atomic-reactor && python3 setup.py install
 CMD ["atomic-reactor", "--verbose", "inside-build"]
diff --git a/atomic_reactor/plugins/add_dockerfile.py b/atomic_reactor/plugins/add_dockerfile.py
index f992d30e4..1ebfb8ac2 100644
--- a/atomic_reactor/plugins/add_dockerfile.py
+++ b/atomic_reactor/plugins/add_dockerfile.py
@@ -8,7 +8,7 @@
 
 Include user-provided Dockerfile in the IMAGE_BUILD_INFO_DIR
 (or other if provided) directory in the built image.
-This is accomplished by appending an ADD command to it.
+This is accomplished by appending a COPY command to it.
 Name of the Dockerfile is changed to include N-V-R of the build.
 N-V-R is specified either by nvr argument OR from
 Name/Version/Release labels in Dockerfile.
@@ -98,12 +98,12 @@ def add_dockerfile(self, build_dir: BuildDir) -> None:
 
         if self.use_final_dockerfile:
             # when using final dockerfile, we should use DOCKERFILE_FILENAME
-            add_line = f'ADD {DOCKERFILE_FILENAME} {self.df_path}\n'
+            add_line = f'COPY {DOCKERFILE_FILENAME} {self.df_path}\n'
             allow_path_in_dockerignore(build_dir.path, DOCKERFILE_FILENAME)
         else:
             # otherwise we should copy current snapshot and use the copied version
             shutil.copy2(build_dir.dockerfile_path, build_dir.path / self.df_name)
-            add_line = f'ADD {self.df_name} {self.df_path}\n'
+            add_line = f'COPY {self.df_name} {self.df_path}\n'
             allow_path_in_dockerignore(build_dir.path, self.df_name)
 
         # put it before last instruction
diff --git a/atomic_reactor/plugins/add_filesystem.py b/atomic_reactor/plugins/add_filesystem.py
index 34507d161..262583973 100644
--- a/atomic_reactor/plugins/add_filesystem.py
+++ b/atomic_reactor/plugins/add_filesystem.py
@@ -331,6 +331,7 @@ def _add_filesystem_to_dockerfile(self, file_name, build_dir: BuildDir):
         """
         Put an ADD instruction into the Dockerfile (to include the filesystem
         into the container image to be built)
+        NOTE: this must be ADD instruction as it un-TARs the source
         """
         content = 'ADD {0} /\n'.format(file_name)
         lines = build_dir.dockerfile.lines
diff --git a/atomic_reactor/plugins/add_help.py b/atomic_reactor/plugins/add_help.py
index fa571e9d1..a1f490693 100644
--- a/atomic_reactor/plugins/add_help.py
+++ b/atomic_reactor/plugins/add_help.py
@@ -8,7 +8,7 @@
 
 Convert a help markdown file a man page and store it to /help.1 in the image
 so that 'atomic help' could display it.
-This is accomplished by appending an ADD command to it.
+This is accomplished by appending a COPY command to it.
 
 Example configuration:
 {
@@ -138,7 +138,7 @@ def add_help_file_to_df(self, build_dir: BuildDir) -> None:
         dockerfile = build_dir.dockerfile
         lines = dockerfile.lines
 
-        content = 'ADD {0} /{0}'.format(self.man_filename)
+        content = 'COPY {0} /{0}'.format(self.man_filename)
         # put it before last instruction
         lines.insert(-1, content + '\n')
 
diff --git a/atomic_reactor/plugins/add_image_content_manifest.py b/atomic_reactor/plugins/add_image_content_manifest.py
index a43b86c3f..034e973fc 100644
--- a/atomic_reactor/plugins/add_image_content_manifest.py
+++ b/atomic_reactor/plugins/add_image_content_manifest.py
@@ -188,11 +188,11 @@ def _write_json_file(self, icm: dict, build_dir: BuildDir) -> None:
 
     def _add_to_dockerfile(self, build_dir: BuildDir) -> None:
         """
-        Put an ADD instruction into the Dockerfile (to include the ICM file
+        Put a COPY instruction into the Dockerfile (to include the ICM file
         into the container image to be built)
         """
         dest_file_path = os.path.join(self.content_manifests_dir, self.icm_file_name)
-        content = 'ADD {0} {1}'.format(self.icm_file_name, dest_file_path)
+        content = 'COPY {0} {1}'.format(self.icm_file_name, dest_file_path)
         lines = build_dir.dockerfile.lines
 
         # Put it before last instruction
diff --git a/atomic_reactor/plugins/flatpak_create_dockerfile.py b/atomic_reactor/plugins/flatpak_create_dockerfile.py
index b9d3d380f..9682334cf 100644
--- a/atomic_reactor/plugins/flatpak_create_dockerfile.py
+++ b/atomic_reactor/plugins/flatpak_create_dockerfile.py
@@ -42,9 +42,9 @@
 LABEL release="@RELEASE@"
 
 RUN rm -f {yum_repos_dir}*
-ADD {relative_repos_path}* {yum_repos_dir}
+COPY {relative_repos_path}* {yum_repos_dir}
 
-ADD {includepkgs} /tmp/
+COPY {includepkgs} /tmp/
 
 RUN cat /tmp/atomic-reactor-includepkgs >> /etc/dnf/dnf.conf && \\
     INSTALLDIR=/var/tmp/flatpak-build && \\
diff --git a/atomic_reactor/plugins/inject_yum_repos.py b/atomic_reactor/plugins/inject_yum_repos.py
index b724d43d2..efdb8a6d2 100644
--- a/atomic_reactor/plugins/inject_yum_repos.py
+++ b/atomic_reactor/plugins/inject_yum_repos.py
@@ -226,7 +226,7 @@ def _inject_repo_files(self, build_dir: BuildDir) -> None:
 
     def _inject_into_dockerfile(self, build_dir: BuildDir):
         build_dir.dockerfile.add_lines(
-            "ADD %s* %s" % (RELATIVE_REPOS_PATH, YUM_REPOS_DIR),
+            "COPY %s* %s" % (RELATIVE_REPOS_PATH, YUM_REPOS_DIR),
             all_stages=True, at_start=True, skip_scratch=True
         )
 
@@ -236,7 +236,7 @@ def _inject_into_dockerfile(self, build_dir: BuildDir):
                 build_dir.path / self._ca_bundle_pem
             )
             build_dir.dockerfile.add_lines(
-                f'ADD {self._ca_bundle_pem} /tmp/{self._ca_bundle_pem}',
+                f'COPY {self._ca_bundle_pem} /tmp/{self._ca_bundle_pem}',
                 all_stages=True, at_start=True, skip_scratch=True
             )
             allow_path_in_dockerignore(build_dir.path, self._ca_bundle_pem)
diff --git a/docs/plugins.md b/docs/plugins.md
index 08a8d513a..4e7de1e44 100644
--- a/docs/plugins.md
+++ b/docs/plugins.md
@@ -177,7 +177,7 @@ containing the Dockerfile.
     and other metadata, and ADDs it to the built image
 - **add_dockerfile**
   - Status: Enabled
-  - The Dockerfile used to build the image has a line added to ADD itself into
+  - The Dockerfile used to build the image has a line added to COPY itself into
     the built image
 - **distgit_fetch_artefacts**
   - Status: Enabled
diff --git a/tests/plugins/test_add_dockerfile.py b/tests/plugins/test_add_dockerfile.py
index e288d0611..482ad4dfa 100644
--- a/tests/plugins/test_add_dockerfile.py
+++ b/tests/plugins/test_add_dockerfile.py
@@ -81,7 +81,7 @@ def test_adddockerfile_plugin(tmpdir, workflow):  # noqa
     expected_df_content = """
 FROM fedora
 RUN yum install -y python-django
-ADD Dockerfile-rhel-server-docker-7.1-20 /root/buildinfo/Dockerfile-rhel-server-docker-7.1-20
+COPY Dockerfile-rhel-server-docker-7.1-20 /root/buildinfo/Dockerfile-rhel-server-docker-7.1-20
 CMD blabla"""
     # the copied Dockerfile should have the *original* content
     expected_df_copy = DockerfileCopy("Dockerfile-rhel-server-docker-7.1-20", df_content)
@@ -105,7 +105,7 @@ def test_adddockerfile_todest(tmpdir, workflow):  # noqa
     expected_df_content = """
 FROM fedora
 RUN yum install -y python-django
-ADD Dockerfile-jboss-eap-6-docker-6.4-77 /usr/share/doc/Dockerfile-jboss-eap-6-docker-6.4-77
+COPY Dockerfile-jboss-eap-6-docker-6.4-77 /usr/share/doc/Dockerfile-jboss-eap-6-docker-6.4-77
 CMD blabla"""
     expected_df_copy = DockerfileCopy("Dockerfile-jboss-eap-6-docker-6.4-77", df_content)
 
@@ -128,7 +128,7 @@ def test_adddockerfile_nvr_from_labels(tmpdir, workflow):  # noqa
 FROM fedora
 RUN yum install -y python-django
 LABEL Name="jboss-eap-6-docker" "Version"="6.4" "Release"=77
-ADD Dockerfile-jboss-eap-6-docker-6.4-77 /root/buildinfo/Dockerfile-jboss-eap-6-docker-6.4-77
+COPY Dockerfile-jboss-eap-6-docker-6.4-77 /root/buildinfo/Dockerfile-jboss-eap-6-docker-6.4-77
 CMD blabla"""
     expected_df_copy = DockerfileCopy("Dockerfile-jboss-eap-6-docker-6.4-77", df_content)
 
@@ -161,7 +161,7 @@ def test_adddockerfile_final(tmpdir, workflow):  # noqa
     expected_df_content = """
 FROM fedora
 RUN yum install -y python-django
-ADD Dockerfile /root/buildinfo/Dockerfile-rhel-server-docker-7.1-20
+COPY Dockerfile /root/buildinfo/Dockerfile-rhel-server-docker-7.1-20
 CMD blabla"""
     workflow.build_dir.for_each_platform(check_outputs(expected_df_content))
 
diff --git a/tests/plugins/test_add_help.py b/tests/plugins/test_add_help.py
index b64b4b493..0ff6ff64d 100644
--- a/tests/plugins/test_add_help.py
+++ b/tests/plugins/test_add_help.py
@@ -170,7 +170,7 @@ def check_df_and_man_file(build_dir):
             f"""
             FROM fedora
             RUN yum install -y python-django
-            ADD {AddHelpPlugin.man_filename} /{AddHelpPlugin.man_filename}
+            COPY {AddHelpPlugin.man_filename} /{AddHelpPlugin.man_filename}
             CMD blabla
             """
         )
diff --git a/tests/plugins/test_add_image_content_manifest.py b/tests/plugins/test_add_image_content_manifest.py
index b920b7c46..99bf9c9fd 100644
--- a/tests/plugins/test_add_image_content_manifest.py
+++ b/tests/plugins/test_add_image_content_manifest.py
@@ -311,7 +311,7 @@ def check_in_build_dir(build_dir):
             dedent("""\
             FROM base_image
             CMD build /spam/eggs
-            ADD eggs-1.0-42.json /root/buildinfo/content_manifests/eggs-1.0-42.json
+            COPY eggs-1.0-42.json /root/buildinfo/content_manifests/eggs-1.0-42.json
             LABEL com.redhat.component=eggs version=1.0 release=42
         """),
             2,
@@ -326,7 +326,7 @@ def check_in_build_dir(build_dir):
             dedent("""\
             FROM base_image
             CMD build /spam/eggs
-            ADD eggs-1.0-42.json /root/buildinfo/content_manifests/eggs-1.0-42.json
+            COPY eggs-1.0-42.json /root/buildinfo/content_manifests/eggs-1.0-42.json
             LABEL com.redhat.component=eggs version=1.0 release=42
         """),
             3,
@@ -341,7 +341,7 @@ def check_in_build_dir(build_dir):
             dedent("""\
             FROM scratch
             CMD build /spam/eggs
-            ADD eggs-1.0-42.json /root/buildinfo/content_manifests/eggs-1.0-42.json
+            COPY eggs-1.0-42.json /root/buildinfo/content_manifests/eggs-1.0-42.json
             LABEL com.redhat.component=eggs version=1.0 release=42
         """),
             0,
diff --git a/tests/plugins/test_flatpak_create_dockerfile.py b/tests/plugins/test_flatpak_create_dockerfile.py
index 0dedc7150..9c4320ef7 100644
--- a/tests/plugins/test_flatpak_create_dockerfile.py
+++ b/tests/plugins/test_flatpak_create_dockerfile.py
@@ -156,7 +156,7 @@ def test_flatpak_create_dockerfile(workflow, source_dir, config_name, override_b
             assert 'name="{}"'.format(config['name']) in df
             assert 'com.redhat.component="{}"'.format(config['component']) in df
             assert "RUN rm -f /etc/yum.repos.d/*" in df
-            assert "ADD atomic-reactor-repos/* /etc/yum.repos.d/" in df
+            assert "COPY atomic-reactor-repos/* /etc/yum.repos.d/" in df
 
 
 def test_skip_plugin(workflow, source_dir, caplog):
diff --git a/tests/plugins/test_inject_yum_repos.py b/tests/plugins/test_inject_yum_repos.py
index 6d9dafc6e..1b5c223bd 100644
--- a/tests/plugins/test_inject_yum_repos.py
+++ b/tests/plugins/test_inject_yum_repos.py
@@ -277,8 +277,8 @@ def test_no_base_image_in_dockerfile(workflow, build_dir, configure_ca_bundle, r
             '''),
             dedent(f'''\
             FROM fedora:33
-            ADD {CA_BUNDLE_PEM} /tmp/{CA_BUNDLE_PEM}
-            ADD atomic-reactor-repos/* /etc/yum.repos.d/
+            COPY {CA_BUNDLE_PEM} /tmp/{CA_BUNDLE_PEM}
+            COPY atomic-reactor-repos/* /etc/yum.repos.d/
             RUN dnf update -y
             RUN rm -f '/etc/yum.repos.d/custom-{{}}.repo'
             RUN rm -f /tmp/{CA_BUNDLE_PEM}
@@ -308,8 +308,8 @@ def test_no_base_image_in_dockerfile(workflow, build_dir, configure_ca_bundle, r
             '''),
             dedent(f'''\
             FROM fedora:33
-            ADD {CA_BUNDLE_PEM} /tmp/{CA_BUNDLE_PEM}
-            ADD atomic-reactor-repos/* /etc/yum.repos.d/
+            COPY {CA_BUNDLE_PEM} /tmp/{CA_BUNDLE_PEM}
+            COPY atomic-reactor-repos/* /etc/yum.repos.d/
             RUN dnf update -y
             RUN rm -f '/etc/yum.repos.d/target-bd4b1.repo' '/etc/yum.repos.d/custom-{{}}.repo'
             RUN rm -f /tmp/{CA_BUNDLE_PEM}
@@ -355,14 +355,14 @@ def test_no_base_image_in_dockerfile(workflow, build_dir, configure_ca_bundle, r
             '''),
             dedent(f'''\
             FROM fedora:33
-            ADD {CA_BUNDLE_PEM} /tmp/{CA_BUNDLE_PEM}
-            ADD atomic-reactor-repos/* /etc/yum.repos.d/
+            COPY {CA_BUNDLE_PEM} /tmp/{CA_BUNDLE_PEM}
+            COPY atomic-reactor-repos/* /etc/yum.repos.d/
             RUN dnf update -y
             FROM scratch
             RUN touch /tmp/hello.txt
             FROM fedora:33
-            ADD {CA_BUNDLE_PEM} /tmp/{CA_BUNDLE_PEM}
-            ADD atomic-reactor-repos/* /etc/yum.repos.d/
+            COPY {CA_BUNDLE_PEM} /tmp/{CA_BUNDLE_PEM}
+            COPY atomic-reactor-repos/* /etc/yum.repos.d/
             RUN echo hello
             RUN rm -f '/etc/yum.repos.d/odcs-1234-{{}}.repo'
             RUN rm -f /tmp/{CA_BUNDLE_PEM}
@@ -405,14 +405,14 @@ def test_no_base_image_in_dockerfile(workflow, build_dir, configure_ca_bundle, r
             '''),
             dedent(f'''\
             FROM fedora:33
-            ADD {CA_BUNDLE_PEM} /tmp/{CA_BUNDLE_PEM}
-            ADD atomic-reactor-repos/* /etc/yum.repos.d/
+            COPY {CA_BUNDLE_PEM} /tmp/{CA_BUNDLE_PEM}
+            COPY atomic-reactor-repos/* /etc/yum.repos.d/
             RUN dnf update -y
             FROM scratch
             RUN touch /tmp/hello.txt
             FROM fedora:33
-            ADD {CA_BUNDLE_PEM} /tmp/{CA_BUNDLE_PEM}
-            ADD atomic-reactor-repos/* /etc/yum.repos.d/
+            COPY {CA_BUNDLE_PEM} /tmp/{CA_BUNDLE_PEM}
+            COPY atomic-reactor-repos/* /etc/yum.repos.d/
             RUN echo hello
             RUN rm -f '/etc/yum.repos.d/target-bd4b1.repo' '/etc/yum.repos.d/odcs-1234-{{}}.repo'
             RUN rm -f /tmp/{CA_BUNDLE_PEM}
@@ -455,16 +455,16 @@ def test_no_base_image_in_dockerfile(workflow, build_dir, configure_ca_bundle, r
             """),
             dedent(f"""\
             FROM golang:1.9 AS builder1
-            ADD {CA_BUNDLE_PEM} /tmp/{CA_BUNDLE_PEM}
-            ADD atomic-reactor-repos/* /etc/yum.repos.d/
+            COPY {CA_BUNDLE_PEM} /tmp/{CA_BUNDLE_PEM}
+            COPY atomic-reactor-repos/* /etc/yum.repos.d/
             USER grahamchapman
             RUN build /spam/eggs
             FROM scratch
             USER somebody
             RUN build /somebody
             FROM jdk:1.8 AS builder2
-            ADD {CA_BUNDLE_PEM} /tmp/{CA_BUNDLE_PEM}
-            ADD atomic-reactor-repos/* /etc/yum.repos.d/
+            COPY {CA_BUNDLE_PEM} /tmp/{CA_BUNDLE_PEM}
+            COPY atomic-reactor-repos/* /etc/yum.repos.d/
             USER ericidle
             RUN yum -y update
             FROM scratch
@@ -506,16 +506,16 @@ def test_no_base_image_in_dockerfile(workflow, build_dir, configure_ca_bundle, r
             """),
             dedent(f"""\
             FROM golang:1.9 AS builder1
-            ADD {CA_BUNDLE_PEM} /tmp/{CA_BUNDLE_PEM}
-            ADD atomic-reactor-repos/* /etc/yum.repos.d/
+            COPY {CA_BUNDLE_PEM} /tmp/{CA_BUNDLE_PEM}
+            COPY atomic-reactor-repos/* /etc/yum.repos.d/
             USER grahamchapman
             RUN build /spam/eggs
             FROM scratch
             USER somebody
             RUN build /somebody
             FROM jdk:1.8 AS builder2
-            ADD {CA_BUNDLE_PEM} /tmp/{CA_BUNDLE_PEM}
-            ADD atomic-reactor-repos/* /etc/yum.repos.d/
+            COPY {CA_BUNDLE_PEM} /tmp/{CA_BUNDLE_PEM}
+            COPY atomic-reactor-repos/* /etc/yum.repos.d/
             USER ericidle
             RUN yum -y update
             FROM scratch
@@ -551,12 +551,12 @@ def test_no_base_image_in_dockerfile(workflow, build_dir, configure_ca_bundle, r
             """),
             dedent(f"""\
             FROM golang:1.9 AS builder1
-            ADD {CA_BUNDLE_PEM} /tmp/{CA_BUNDLE_PEM}
-            ADD atomic-reactor-repos/* /etc/yum.repos.d/
+            COPY {CA_BUNDLE_PEM} /tmp/{CA_BUNDLE_PEM}
+            COPY atomic-reactor-repos/* /etc/yum.repos.d/
             RUN build /spam/eggs
             FROM base
-            ADD {CA_BUNDLE_PEM} /tmp/{CA_BUNDLE_PEM}
-            ADD atomic-reactor-repos/* /etc/yum.repos.d/
+            COPY {CA_BUNDLE_PEM} /tmp/{CA_BUNDLE_PEM}
+            COPY atomic-reactor-repos/* /etc/yum.repos.d/
             COPY --from=builder1 /some/stuff /bin/spam
             USER root
             RUN rm -f '/etc/yum.repos.d/custom-{{}}.repo'
@@ -593,13 +593,13 @@ def test_no_base_image_in_dockerfile(workflow, build_dir, configure_ca_bundle, r
             """),
             dedent(f"""\
             FROM golang:1.9 AS builder1
-            ADD {CA_BUNDLE_PEM} /tmp/{CA_BUNDLE_PEM}
-            ADD atomic-reactor-repos/* /etc/yum.repos.d/
+            COPY {CA_BUNDLE_PEM} /tmp/{CA_BUNDLE_PEM}
+            COPY atomic-reactor-repos/* /etc/yum.repos.d/
             USER grahamchapman
             RUN build /spam/eggs
             FROM base
-            ADD {CA_BUNDLE_PEM} /tmp/{CA_BUNDLE_PEM}
-            ADD atomic-reactor-repos/* /etc/yum.repos.d/
+            COPY {CA_BUNDLE_PEM} /tmp/{CA_BUNDLE_PEM}
+            COPY atomic-reactor-repos/* /etc/yum.repos.d/
             COPY --from=builder1 /some/stuff /bin/spam
             USER root
             RUN rm -f '/etc/yum.repos.d/custom-{{}}.repo'
@@ -647,8 +647,8 @@ def test_no_base_image_in_dockerfile(workflow, build_dir, configure_ca_bundle, r
             '''),
             dedent(f'''\
             FROM fedora:33
-            ADD {CA_BUNDLE_PEM} /tmp/{CA_BUNDLE_PEM}
-            ADD atomic-reactor-repos/* /etc/yum.repos.d/
+            COPY {CA_BUNDLE_PEM} /tmp/{CA_BUNDLE_PEM}
+            COPY atomic-reactor-repos/* /etc/yum.repos.d/
             RUN dnf update -y
             RUN rm -f '/etc/yum.repos.d/custom-{{}}.repo' '/etc/yum.repos.d/custom-2-{{}}.repo'
             RUN rm -f /tmp/{CA_BUNDLE_PEM}
@@ -689,8 +689,8 @@ def test_no_base_image_in_dockerfile(workflow, build_dir, configure_ca_bundle, r
 ''',
             dedent(f'''\
             FROM fedora
-            ADD {CA_BUNDLE_PEM} /tmp/{CA_BUNDLE_PEM}
-            ADD atomic-reactor-repos/* /etc/yum.repos.d/
+            COPY {CA_BUNDLE_PEM} /tmp/{CA_BUNDLE_PEM}
+            COPY atomic-reactor-repos/* /etc/yum.repos.d/
             RUN yum install -y httpd                    uwsgi
             RUN rm -f '/etc/yum.repos.d/custom-{{}}.repo'
             RUN rm -f /tmp/{CA_BUNDLE_PEM}
@@ -721,7 +721,7 @@ def test_no_base_image_in_dockerfile(workflow, build_dir, configure_ca_bundle, r
             '''),
             dedent('''\
             FROM fedora:33
-            ADD atomic-reactor-repos/* /etc/yum.repos.d/
+            COPY atomic-reactor-repos/* /etc/yum.repos.d/
             RUN dnf update -y
             RUN rm -f '/etc/yum.repos.d/custom-{}.repo'
             '''),
@@ -757,12 +757,12 @@ def test_no_base_image_in_dockerfile(workflow, build_dir, configure_ca_bundle, r
             '''),
             dedent(f'''\
             FROM base
-            ADD {CA_BUNDLE_PEM} /tmp/{CA_BUNDLE_PEM}
-            ADD atomic-reactor-repos/* /etc/yum.repos.d/
+            COPY {CA_BUNDLE_PEM} /tmp/{CA_BUNDLE_PEM}
+            COPY atomic-reactor-repos/* /etc/yum.repos.d/
             RUN gcc main.c
             FROM fedora:33
-            ADD {CA_BUNDLE_PEM} /tmp/{CA_BUNDLE_PEM}
-            ADD atomic-reactor-repos/* /etc/yum.repos.d/
+            COPY {CA_BUNDLE_PEM} /tmp/{CA_BUNDLE_PEM}
+            COPY atomic-reactor-repos/* /etc/yum.repos.d/
             USER 1001
             WORKDIR /src
             USER root
@@ -1018,10 +1018,10 @@ def test_some_platform_has_no_repos(workflow, build_dir, repourl, repo_filename,
     aarch64_dir = workflow.build_dir.platform_dir("aarch64")
 
     assert (x86_dir.path / RELATIVE_REPOS_PATH / repo_filename).exists()
-    assert "ADD atomic-reactor-repos/* /etc/yum.repos.d" in x86_dir.dockerfile.content
+    assert "COPY atomic-reactor-repos/* /etc/yum.repos.d" in x86_dir.dockerfile.content
 
     assert not (aarch64_dir.path / RELATIVE_REPOS_PATH).exists()
-    assert "ADD atomic-reactor-repos/* /etc/yum.repos.d" not in aarch64_dir.dockerfile.content
+    assert "COPY atomic-reactor-repos/* /etc/yum.repos.d" not in aarch64_dir.dockerfile.content
 
     assert "no repos to inject for aarch64 platform" in caplog.text
 
diff --git a/tests/test_inner.py b/tests/test_inner.py
index 39fc5dce7..50339d026 100644
--- a/tests/test_inner.py
+++ b/tests/test_inner.py
@@ -351,7 +351,7 @@ def test_parent_images_to_str(workflow, caplog):
 def test_no_base_image(context_dir, build_dir):
     source = DummySource("git", "https://git.host/")
     dfp = DockerfileParser(source.source_path)
-    dfp.content = "# no FROM\nADD spam /eggs"
+    dfp.content = "# no FROM\nCOPY spam /eggs"
     with pytest.raises(RuntimeError, match="no base image specified"):
         DockerBuildWorkflow(context_dir,
                             build_dir,