chore(Dockerfile): set USER_GID alongside USER_UID

.chloggen/update_user_gid.yaml

@@ -0,0 +1,26 @@
+# Use this changelog template to create an entry for release notes.
+
+# One of 'breaking', 'deprecation', 'new_component', 'enhancement', 'bug_fix'
+change_type: 'enhancement'
+
+# The name of the component, or a single word describing the area of concern, (e.g. otlpreceiver)
+component: images
+
+# A brief description of the change.  Surround your text with quotes ("") if it needs to start with a backtick (`).
+note: set USER_GID alongside USER_UID
+
+# One or more tracking issues or pull requests related to the change
+issues: [662]
+
+# (Optional) One or more lines of additional information to render under the primary note.
+# These lines will be padded with 2 spaces and then inserted directly into the document.
+# Use pipe (|) for multiline entries.
+subtext:
+
+# Optional: The change log or logs in which this entry should be included.
+# e.g. '[user]' or '[user, api]'
+# Include 'user' if the change is relevant to end users.
+# Include 'api' if there is a change to a library API.
+# Default: '[user]'
+change_logs: []
+

distributions/otelcol-contrib/Dockerfile

@@ -4,7 +4,8 @@ RUN apk --update add ca-certificates
 FROM scratch
 
 ARG USER_UID=10001
-USER ${USER_UID}
+ARG USER_GID=10001
+USER ${USER_UID}:${USER_GID}
 
 COPY --from=certs /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/ca-certificates.crt
 COPY --chmod=755 otelcol-contrib /otelcol-contrib

distributions/otelcol-k8s/Dockerfile

@@ -4,7 +4,8 @@ RUN apk --update add ca-certificates
 FROM scratch
 
 ARG USER_UID=10001
-USER ${USER_UID}
+ARG USER_GID=10001
+USER ${USER_UID}:${USER_GID}
 
 COPY --from=certs /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/ca-certificates.crt
 COPY --chmod=755 otelcol-k8s /otelcol-k8s

distributions/otelcol-otlp/Dockerfile

@@ -4,7 +4,8 @@ RUN apk --update add ca-certificates
 FROM scratch
 
 ARG USER_UID=10001
-USER ${USER_UID}
+ARG USER_GID=10001
+USER ${USER_UID}:${USER_GID}
 
 COPY --from=certs /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/ca-certificates.crt
 COPY --chmod=755 otelcol-otlp /otelcol-otlp

distributions/otelcol/Dockerfile

@@ -4,7 +4,8 @@ RUN apk --update add ca-certificates
 FROM scratch
 
 ARG USER_UID=10001
-USER ${USER_UID}
+ARG USER_GID=10001
+USER ${USER_UID}:${USER_GID}
 
 COPY --from=certs /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/ca-certificates.crt
 COPY --chmod=755 otelcol /otelcol