diff --git a/.github/workflows/build-and-test.yml b/.github/workflows/build-and-test.yml
index 4eabab5ee..9e1f4b144 100644
--- a/.github/workflows/build-and-test.yml
+++ b/.github/workflows/build-and-test.yml
@@ -59,6 +59,7 @@ jobs:
       matrix:
         dockerfile:
           - 'Dockerfile.test-client'
+          - 'Dockerfile.test-server'
     steps:
       - name: Check out the repo
         uses: actions/checkout@v2
diff --git a/Dockerfile.test-client b/Dockerfile.test-client
index 32345200a..d3ac9139a 100644
--- a/Dockerfile.test-client
+++ b/Dockerfile.test-client
@@ -4,7 +4,7 @@
 FROM ocaml/opam:alpine-3.13-ocaml-4.12 as compilation
 LABEL Description="learn-ocaml building" Vendor="OCamlPro"
 
-WORKDIR learn-ocaml
+WORKDIR /home/opam/learn-ocaml
 
 # Note: don't copy learn-ocaml.opam.locked
 COPY learn-ocaml-client.opam learn-ocaml.opam ./
@@ -62,4 +62,4 @@ WORKDIR /learnocaml
 
 COPY --from=compilation /home/opam/install-prefix/bin/learn-ocaml-client /usr/bin
 
-ENTRYPOINT ["dumb-init","learn-ocaml-client"]
+ENTRYPOINT ["dumb-init","/usr/bin/learn-ocaml-client"]
diff --git a/Dockerfile.test-server b/Dockerfile.test-server
new file mode 100644
index 000000000..efe90b8cd
--- /dev/null
+++ b/Dockerfile.test-server
@@ -0,0 +1,70 @@
+# This Dockerfile is useful for testing purposes
+# to ensure learn-ocaml can be built alone from learn-ocaml.opam
+
+FROM ocaml/opam:alpine-3.13-ocaml-4.12 as compilation
+LABEL Description="learn-ocaml building" Vendor="OCamlPro"
+
+WORKDIR /home/opam/learn-ocaml
+
+# Note: don't copy learn-ocaml.locked
+COPY learn-ocaml.opam learn-ocaml-client.opam ./
+RUN sudo chown -R opam:nogroup .
+
+ENV OPAMYES true
+RUN echo 'archive-mirrors: [ "https://opam.ocaml.org/cache" ]' >> ~/.opam/config \
+  && opam repository set-url default http://opam.ocaml.org \
+  && opam switch 4.12 \
+  && echo 'pre-session-commands: [ "sudo" "apk" "add" depexts ]' >> ~/.opam/config \
+  && opam pin add -n -y -k path learn-ocaml . \
+  && opam install learn-ocaml --deps-only --locked
+
+COPY static static
+COPY translations translations
+COPY src src
+COPY scripts scripts
+COPY Makefile Makefile
+COPY demo-repository demo-repository
+COPY dune-project dune-project
+COPY dune dune
+RUN sudo chown -R opam:nogroup .
+
+ENV OPAMVERBOSE 1
+
+RUN opam install learn-ocaml --destdir /home/opam/install-prefix \
+  && ls -l /home/opam/install-prefix/bin/learn-ocaml
+
+
+FROM alpine:3.13 as program
+
+ARG BUILD_DATE
+ARG VCS_BRANCH
+ARG VCS_REF
+
+LABEL org.label-schema.build-date="${BUILD_DATE}" \
+  org.label-schema.name="learn-ocaml" \
+  org.label-schema.description="learn-ocaml app manager" \
+  org.label-schema.url="https://ocaml-sf.org/" \
+  org.label-schema.vendor="The OCaml Software Foundation" \
+  org.label-schema.version="${VCS_BRANCH}" \
+  org.label-schema.vcs-ref="${VCS_REF}" \
+  org.label-schema.vcs-url="https://github.com/ocaml-sf/learn-ocaml" \
+  org.label-schema.schema-version="1.0"
+
+RUN apk update \
+  && apk add ncurses-libs libev dumb-init git openssl \
+  && addgroup learn-ocaml \
+  && adduser learn-ocaml -DG learn-ocaml
+
+VOLUME ["/repository"]
+RUN mkdir -p /sync && chown learn-ocaml:learn-ocaml /sync
+VOLUME ["/sync"]
+EXPOSE 8080
+EXPOSE 8443
+
+USER learn-ocaml
+WORKDIR /home/learn-ocaml
+
+COPY --from=compilation /home/opam/install-prefix /usr
+
+ENTRYPOINT ["dumb-init","/usr/bin/learn-ocaml","--sync-dir=/sync","--repo=/repository"]
+CMD ["build","serve"]
diff --git a/learn-ocaml-client.opam b/learn-ocaml-client.opam
index 450b183d2..af2a8a3d3 100644
--- a/learn-ocaml-client.opam
+++ b/learn-ocaml-client.opam
@@ -14,31 +14,32 @@ homepage: "https://github.com/ocaml-sf/learn-ocaml"
 bug-reports: "https://github.com/ocaml-sf/learn-ocaml/issues"
 dev-repo: "git+https://github.com/ocaml-sf/learn-ocaml"
 depends: [
-  "base" {>= "v0.9.4"}
+  "asak"
   "base64"
+  "base" {>= "v0.9.4"}
   "cmdliner"
-  "omd" {<= "1.3.1"}
-  "asak"
-  "gg"
-  "vg"
   "cohttp" {>= "2.0.0"}
   "cohttp-lwt-unix" {>= "2.0.0"}
-  "ssl" {= "0.5.5"}
+  "cstruct" {>= "3.3.0"}
   "digestif" {>= "0.7.1"}
-  "dune"
+  "dune" {>= "1.11.4"}
   "ezjsonm"
+  "gg"
+  "ipaddr" {= "2.8.0" }
   "lwt" {>= "4.0.0"}
   "lwt_ssl"
   "ocaml" {(>= "4.12") & (< "4.13~")}
   "ocamlfind" {build}
   "ocp-indent-nlfork"
-  "ocp-ocamlres" {>= "0.4"}
   "ocplib-json-typed" {>= "0.7"}
-  "ipaddr" {= "2.8.0" }
-  "cstruct" {>= "3.3.0"}
-  "ppx_tools"
-  "ppx_sexp_conv"
+  "ocp-ocamlres" {>= "0.4"}
+  "omd" {<= "1.3.1"}
   "ppx_fields_conv"
+  "ppxlib"
+  "ppx_sexp_conv"
+  "ppx_tools"
+  "ssl" {= "0.5.5"}
+  "vg"
 ]
 build: [
   ["dune" "build" "@install" "-p" name "-j" jobs]
diff --git a/learn-ocaml.opam b/learn-ocaml.opam
index 27aad57af..5d14f21dd 100644
--- a/learn-ocaml.opam
+++ b/learn-ocaml.opam
@@ -14,8 +14,9 @@ homepage: "https://github.com/ocaml-sf/learn-ocaml"
 bug-reports: "https://github.com/ocaml-sf/learn-ocaml/issues"
 dev-repo: "git+https://github.com/ocaml-sf/learn-ocaml"
 depends: [
-  "base" {>= "v0.9.4"}
+  "asak"
   "base64"
+  "base" {>= "v0.9.4"}
   "cmdliner"
   "cohttp" {>= "2.0.0"}
   "cohttp-lwt" {>= "2.0.0"}
@@ -25,8 +26,8 @@ depends: [
   "digestif" {>= "0.7.1"}
   "dune" {>= "1.11.4"}
   "easy-format" {>= "1.3.0" }
-  "ipaddr" {>= "2.8.0" }
   "ezjsonm"
+  "ipaddr" {>= "2.8.0" }
   "js_of_ocaml" {>= "3.3.0" & != "3.10.0"}
   "js_of_ocaml-compiler" {>= "3.3.0"}
   "js_of_ocaml-lwt"
@@ -36,26 +37,28 @@ depends: [
   "lwt" {>= "4.0.0"}
   "lwt_react"
   "lwt_ssl"
-  "ssl" {= "0.5.5"}
   "magic-mime"
   "markup"
   "markup-lwt"
   "ocaml" {(>= "4.12") & (< "4.13~")}
   "ocamlfind" {build}
   "ocp-indent-nlfork"
-  "ocp-ocamlres" {= "0.4"}
-  "ocplib-json-typed" {>= "0.6"}
-  "ocplib-json-typed-browser" {>= "0.6"}
+  "ocplib-json-typed" {>= "0.7"}
+  "ocplib-json-typed-browser" {>= "0.7"}
+  "ocp-ocamlres" {>= "0.4"}
   "odoc" {build}
-  "omd"
+  "omd" {<= "1.3.1"}
   "pprint"
   "ppx_cstruct"
+  "ppxlib"
+  "ppx_sexp_conv"
   "ppx_tools"
+  "ppx_tools_versioned"
   "re"
+  "ssl" {= "0.5.5"}
   "uutf" {>= "1.0" }
   "vg"
   "yojson" {>= "1.4.0" }
-  "asak" {>= "0.1"}
 ]
 build: [
   [make "static"]